Group 13 Elements (Boron Group):
Includes boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl).
Boron is a metalloid with unique properties and forms covalent compounds.
Aluminum is widely used in industries due to its lightweight and corrosion-resistant nature.
Gallium is a metal with a low melting point, used in semiconductors and LED technology.
Group 14 Elements (Carbon Group):
Includes carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb).
Carbon is the basis of organic chemistry and has diverse allotropes, including diamond and graphite.
Silicon is a significant component of semiconductors and plays a vital role in modern electronics.
Group 15 Elements (Nitrogen Group):
Includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).
Nitrogen is essential for life and exists as diatomic molecules in the atmosphere.
Phosphorus is crucial for biological processes and is used in fertilizers and detergents.
Group 16 Elements (Oxygen Group/Chalcogens):
Includes oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).
Oxygen is vital for respiration and combustion processes.
Sulfur is widely used in the chemical industry and exists as elemental sulfur and various sulfide compounds.
Group 17 Elements (Halogens):
Includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Halogens are highly reactive nonmetals and exist as diatomic molecules in their elemental form.
Chlorine is widely used as a disinfectant, and iodine is used in antiseptics.
Group 18 Elements (Noble Gases):
Includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
Noble gases have full valence electron shells, making them stable and unreactive.
Helium is used in balloons and as a coolant in various applications.
Group 16, 17, and 18 Compounds:
Students should know the preparation, properties, and uses of common compounds like sulfuric acid, hydrochloric acid, ozone, hydrogen peroxide, and ammonia.
General Trends in p-Block Elements:
Understanding periodic trends like atomic size, ionization energy, electronegativity, and electron affinity within the p-block elements.
Important Compounds:
Learn about important compounds like borax, boron trifluoride, silicones, phosphine, hydrogen halides, carbon dioxide, sulfur dioxide, etc.
Allotropes and Applications:
Understanding the various allotropes of carbon (diamond, graphite, fullerene) and their applications in technology.
Includes boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl).
Boron is a metalloid with unique properties and forms covalent compounds.
Aluminum is widely used in industries due to its lightweight and corrosion-resistant nature.
Gallium is a metal with a low melting point, used in semiconductors and LED technology.
Group 14 Elements (Carbon Group):
Includes carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb).
Carbon is the basis of organic chemistry and has diverse allotropes, including diamond and graphite.
Silicon is a significant component of semiconductors and plays a vital role in modern electronics.
Group 15 Elements (Nitrogen Group):
Includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).
Nitrogen is essential for life and exists as diatomic molecules in the atmosphere.
Phosphorus is crucial for biological processes and is used in fertilizers and detergents.
Group 16 Elements (Oxygen Group/Chalcogens):
Includes oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).
Oxygen is vital for respiration and combustion processes.
Sulfur is widely used in the chemical industry and exists as elemental sulfur and various sulfide compounds.
Group 17 Elements (Halogens):
Includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Halogens are highly reactive nonmetals and exist as diatomic molecules in their elemental form.
Chlorine is widely used as a disinfectant, and iodine is used in antiseptics.
Group 18 Elements (Noble Gases):
Includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
Noble gases have full valence electron shells, making them stable and unreactive.
Helium is used in balloons and as a coolant in various applications.
Group 16, 17, and 18 Compounds:
Students should know the preparation, properties, and uses of common compounds like sulfuric acid, hydrochloric acid, ozone, hydrogen peroxide, and ammonia.
General Trends in p-Block Elements:
Understanding periodic trends like atomic size, ionization energy, electronegativity, and electron affinity within the p-block elements.
Important Compounds:
Learn about important compounds like borax, boron trifluoride, silicones, phosphine, hydrogen halides, carbon dioxide, sulfur dioxide, etc.
Allotropes and Applications:
Understanding the various allotropes of carbon (diamond, graphite, fullerene) and their applications in technology.
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For the reaction, N2(g) + 3H2(g) → 2NH3(g) d[NH3]/dt = 2 x10-4 mol L-1s-1, the value of -d[H2]/dt would be
Anonymous Quiz
45%
3 x 10-4 mol L-1s-1
29%
4 x 10-4 mol L-1s-1
21%
6×10-4 mol L-1s-1
5%
1 x 10-4 mol L-1s-1
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Inulin is a polymer of ______
Anonymous Quiz
24%
glucose and fructose
22%
glucose
37%
fructose
16%
glucose, fructose and galactose
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Stress, like pressure, is always perpendicular to a plane. True or False?
Anonymous Quiz
63%
Ture
37%
False
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✅Very important points - Human Reproduction
🌟Uterus also called womb.
🌟 Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)
🌟 Clitoris is a homologous to the penis in the male.
🌟 Bartholin Glands : It is homologous to Cowper's gland of male
🌟 A functional mammary gland is characteristic of all female mammals.
🌟 The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.
⚡️ Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.
⚡️ Liberation of sperms from testes is called semination.
⚡️ Liberation of sperms from body of male is called ejaculation .
⚡️ Mammalian sperms are transfered to vagina of female by the process called insemination.
⚡️ In 1 ml of semen, 20 to 120 millions of sperms are present in human being.
⚡️ Leydig's cells mature at 10 yrs. of age.
⚡️ In humans (and most vertebrates), the first polar body does not undergo meiosis II.
⚡️ The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.
⚡️ 65-74 days are required to complete the cycle of spermatogenesis in human being.
⚡ Get Latest Best Notes :- Join Now
🌟Uterus also called womb.
🌟 Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)
🌟 Clitoris is a homologous to the penis in the male.
🌟 Bartholin Glands : It is homologous to Cowper's gland of male
🌟 A functional mammary gland is characteristic of all female mammals.
🌟 The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.
⚡️ Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.
⚡️ Liberation of sperms from testes is called semination.
⚡️ Liberation of sperms from body of male is called ejaculation .
⚡️ Mammalian sperms are transfered to vagina of female by the process called insemination.
⚡️ In 1 ml of semen, 20 to 120 millions of sperms are present in human being.
⚡️ Leydig's cells mature at 10 yrs. of age.
⚡️ In humans (and most vertebrates), the first polar body does not undergo meiosis II.
⚡️ The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.
⚡️ 65-74 days are required to complete the cycle of spermatogenesis in human being.
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✤ Terminologies in Wave Motion -
➷ Amplitude
➷ Period
➷ Wavelength
➷ Frequency
➷ Wave velocity
➷ Phase or phase angle (O)
➷ Phase difference
➷ Path difference
➷ Time difference
★ Amplitude (A): The amplitude of a wave is the maximum displacement of any particle of the medium from its equilibrium position.
★ Period (T): Period (T) of a wave is the time taken by any particle of the medium to complete one vibration during a period (T).
★ Wavelength (λ): Wavelength (λ) is equal to the distance between two consecutive particles of the medium which are in the same state of vibration it is equal to the distance travelled by the wave by its time period (T).
★ Frequency (f): It is the number of vibrations made per second by any particles of the medium (f = 1/T). Since the frequency of a wave is a characteristic property of the source which is producing the wave motion, hence, the frequency of a wave does not change when a wave travels from one medium to another medium.
★ Phase or Phase Angle (Φ): It represents the state of vibration of the particle of a medium with respect to its mean position.
★ Phase Difference Δ(Φ): It represents the different state of vibration of a particle at two different instants (or) any pair of particles at the same instant.
★ Wave Velocity (v): It is the distance travelled by the wave in one second (v = λ/T). It is determined by the mechanical properties of the medium through which the wave propagates.
⚡ Get Best Notes :- Join Now
➷ Amplitude
➷ Period
➷ Wavelength
➷ Frequency
➷ Wave velocity
➷ Phase or phase angle (O)
➷ Phase difference
➷ Path difference
➷ Time difference
★ Amplitude (A): The amplitude of a wave is the maximum displacement of any particle of the medium from its equilibrium position.
★ Period (T): Period (T) of a wave is the time taken by any particle of the medium to complete one vibration during a period (T).
★ Wavelength (λ): Wavelength (λ) is equal to the distance between two consecutive particles of the medium which are in the same state of vibration it is equal to the distance travelled by the wave by its time period (T).
★ Frequency (f): It is the number of vibrations made per second by any particles of the medium (f = 1/T). Since the frequency of a wave is a characteristic property of the source which is producing the wave motion, hence, the frequency of a wave does not change when a wave travels from one medium to another medium.
★ Phase or Phase Angle (Φ): It represents the state of vibration of the particle of a medium with respect to its mean position.
★ Phase Difference Δ(Φ): It represents the different state of vibration of a particle at two different instants (or) any pair of particles at the same instant.
★ Wave Velocity (v): It is the distance travelled by the wave in one second (v = λ/T). It is determined by the mechanical properties of the medium through which the wave propagates.
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👍9💯4❤1🤩1
For the reaction, N2(g) + 3H2(g) → 2NH3(g) d[NH3]/dt = 2 x10-4 mol L-1s-1, the value of -d[H2]/dt would be
Anonymous Quiz
39%
3 x 10-4 mol L-1s-1
31%
4 x 10-4 mol L-1s-1
25%
610-4 mol L-1s-1
5%
1 x 10-4 mol L-1s-1
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What is the pressure 300 m below the surface of the ocean if the sp. gravity of sea water is 2.08 : [Atmospheric pressure=1.013 x 105N/ m²].
Anonymous Quiz
24%
73.5 x 105 N/m²
49%
62.1x 105 N/m²
20%
61.5 x 105 N/m²
7%
53.5 x 105 N/m²
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The height of the geostationary satellites above the earth’s surface is approximately 36,000 km.
Anonymous Quiz
77%
True
23%
False
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____________ and Boron are same in case when reacted with concentrated nitric acid.
Anonymous Quiz
25%
Oxygen
39%
Aluminium
17%
Hydrogen
18%
No other metal
👍7
For a satellite executing an elliptical orbit around a planet, its minimum potential energy is at the perigee.
Anonymous Quiz
76%
True
24%
False
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The ionization enthalpy _________ down the group in the family.
Anonymous Quiz
31%
Increases
42%
Decreases
8%
Constant
20%
Is a regular
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🌟Important Increasing Orders
1️⃣ Ionization Energy
(i) Na, Al, Mg, Si
(ii) Li, B, Be, C, O, N, F, Ne, He (Ist I.P.)
(iii) Be, C, B, N, F, O, Ne, He, Li (IInd I.P.)
2️⃣ Electron Affinity
(i) I, Br, F, Cl
(ii) Cu, Ag, Au (EA, of Au is very high = 222 kJ mol–1)
(iii) O, S, F, Cl
(iv) N, P, O, S
3️⃣ Electronegativity
(i) As, P, S, Cl
(ii) I, Br, Cl, F
(iii) C, N, O, F
4️⃣ Oxyacids Of Halogen
1. Hypochlorous acid- HClO
2. Chlorous acid - HClO2
3. Chloric acid - HClO3
4. Perchloric acid - HClO4
5️⃣ Acidic Strength
HClO < HClO2 < HClO3 < HClO4
6️⃣ Oxidising Nature
HClO > HClO2 > HClO3 > HClO4
(i) Na, Al, Mg, Si
(ii) Li, B, Be, C, O, N, F, Ne, He (Ist I.P.)
(iii) Be, C, B, N, F, O, Ne, He, Li (IInd I.P.)
(i) I, Br, F, Cl
(ii) Cu, Ag, Au (EA, of Au is very high = 222 kJ mol–1)
(iii) O, S, F, Cl
(iv) N, P, O, S
(i) As, P, S, Cl
(ii) I, Br, Cl, F
(iii) C, N, O, F
1. Hypochlorous acid- HClO
2. Chlorous acid - HClO2
3. Chloric acid - HClO3
4. Perchloric acid - HClO4
HClO < HClO2 < HClO3 < HClO4
HClO > HClO2 > HClO3 > HClO4
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