CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313093
In which of the following group(s) of the periodic table, m.p/b.p. increase down the group ?
1 1
2 2
3 13
4 17
Explanation:
The m.p/b.p of the elements of group 17 increase down the group while those of groups 1,2 and 13 decrease down the group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313094
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be
1 Hg
2 Ag
3 Ga
4 Cs
Explanation:
Hg, Ga, Cs are liqiud near room temperature. But Ag (sliver) is solid.
JEE - 2022
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313095
Which is chemically most active non-metal?
1 \(\mathrm{S}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{F}_{2}\)
4 \(\mathrm{N}_{2}\)
Explanation:
\({{\text{F}}_{\text{2}}}\) is most reactive due to highest electronegativity, low bond dissociation energy and high heat of hydration of \(\mathrm{F}^{-}\)ion.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313096
The correct order of metallic character is
1 \({\text{Ca}} > {\text{K}} > {\text{Be}}\)
2 \({\text{Be}} > {\text{Ca}} > {\text{K}}\)
3 \({\text{K}} > {\text{Ca}} > {\text{Be}}\)
4 \({\text{K}} > {\text{Be}} > {\text{Ca}}\)
Explanation:
Metallic nature increases down the group due to increase in atomic radius, and decreases across a period, due to decrease in atomic radius. Hence, the correct order of metallic character is \({\text{K}} > {\text{Ca}} > {\text{Be}}\).
JEE - 2023
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313097
Which of the following order is correct?
1 F > N > C > Si > Ga: non-metallic character
2 F > Cl > O > N: oxidising property
3 C< Si > P > N: electron affinity value
4 All of these
Explanation:
C = –121; Si = –135; P = –60; N = 31. (1) As electronegativity increases, non-metallic character increases. (2) It is based on their SRP values, which in turns depends on bond energies, hydration energies and electron affinity values.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313093
In which of the following group(s) of the periodic table, m.p/b.p. increase down the group ?
1 1
2 2
3 13
4 17
Explanation:
The m.p/b.p of the elements of group 17 increase down the group while those of groups 1,2 and 13 decrease down the group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313094
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be
1 Hg
2 Ag
3 Ga
4 Cs
Explanation:
Hg, Ga, Cs are liqiud near room temperature. But Ag (sliver) is solid.
JEE - 2022
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313095
Which is chemically most active non-metal?
1 \(\mathrm{S}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{F}_{2}\)
4 \(\mathrm{N}_{2}\)
Explanation:
\({{\text{F}}_{\text{2}}}\) is most reactive due to highest electronegativity, low bond dissociation energy and high heat of hydration of \(\mathrm{F}^{-}\)ion.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313096
The correct order of metallic character is
1 \({\text{Ca}} > {\text{K}} > {\text{Be}}\)
2 \({\text{Be}} > {\text{Ca}} > {\text{K}}\)
3 \({\text{K}} > {\text{Ca}} > {\text{Be}}\)
4 \({\text{K}} > {\text{Be}} > {\text{Ca}}\)
Explanation:
Metallic nature increases down the group due to increase in atomic radius, and decreases across a period, due to decrease in atomic radius. Hence, the correct order of metallic character is \({\text{K}} > {\text{Ca}} > {\text{Be}}\).
JEE - 2023
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313097
Which of the following order is correct?
1 F > N > C > Si > Ga: non-metallic character
2 F > Cl > O > N: oxidising property
3 C< Si > P > N: electron affinity value
4 All of these
Explanation:
C = –121; Si = –135; P = –60; N = 31. (1) As electronegativity increases, non-metallic character increases. (2) It is based on their SRP values, which in turns depends on bond energies, hydration energies and electron affinity values.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313093
In which of the following group(s) of the periodic table, m.p/b.p. increase down the group ?
1 1
2 2
3 13
4 17
Explanation:
The m.p/b.p of the elements of group 17 increase down the group while those of groups 1,2 and 13 decrease down the group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313094
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be
1 Hg
2 Ag
3 Ga
4 Cs
Explanation:
Hg, Ga, Cs are liqiud near room temperature. But Ag (sliver) is solid.
JEE - 2022
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313095
Which is chemically most active non-metal?
1 \(\mathrm{S}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{F}_{2}\)
4 \(\mathrm{N}_{2}\)
Explanation:
\({{\text{F}}_{\text{2}}}\) is most reactive due to highest electronegativity, low bond dissociation energy and high heat of hydration of \(\mathrm{F}^{-}\)ion.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313096
The correct order of metallic character is
1 \({\text{Ca}} > {\text{K}} > {\text{Be}}\)
2 \({\text{Be}} > {\text{Ca}} > {\text{K}}\)
3 \({\text{K}} > {\text{Ca}} > {\text{Be}}\)
4 \({\text{K}} > {\text{Be}} > {\text{Ca}}\)
Explanation:
Metallic nature increases down the group due to increase in atomic radius, and decreases across a period, due to decrease in atomic radius. Hence, the correct order of metallic character is \({\text{K}} > {\text{Ca}} > {\text{Be}}\).
JEE - 2023
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313097
Which of the following order is correct?
1 F > N > C > Si > Ga: non-metallic character
2 F > Cl > O > N: oxidising property
3 C< Si > P > N: electron affinity value
4 All of these
Explanation:
C = –121; Si = –135; P = –60; N = 31. (1) As electronegativity increases, non-metallic character increases. (2) It is based on their SRP values, which in turns depends on bond energies, hydration energies and electron affinity values.
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313093
In which of the following group(s) of the periodic table, m.p/b.p. increase down the group ?
1 1
2 2
3 13
4 17
Explanation:
The m.p/b.p of the elements of group 17 increase down the group while those of groups 1,2 and 13 decrease down the group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313094
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be
1 Hg
2 Ag
3 Ga
4 Cs
Explanation:
Hg, Ga, Cs are liqiud near room temperature. But Ag (sliver) is solid.
JEE - 2022
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313095
Which is chemically most active non-metal?
1 \(\mathrm{S}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{F}_{2}\)
4 \(\mathrm{N}_{2}\)
Explanation:
\({{\text{F}}_{\text{2}}}\) is most reactive due to highest electronegativity, low bond dissociation energy and high heat of hydration of \(\mathrm{F}^{-}\)ion.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313096
The correct order of metallic character is
1 \({\text{Ca}} > {\text{K}} > {\text{Be}}\)
2 \({\text{Be}} > {\text{Ca}} > {\text{K}}\)
3 \({\text{K}} > {\text{Ca}} > {\text{Be}}\)
4 \({\text{K}} > {\text{Be}} > {\text{Ca}}\)
Explanation:
Metallic nature increases down the group due to increase in atomic radius, and decreases across a period, due to decrease in atomic radius. Hence, the correct order of metallic character is \({\text{K}} > {\text{Ca}} > {\text{Be}}\).
JEE - 2023
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313097
Which of the following order is correct?
1 F > N > C > Si > Ga: non-metallic character
2 F > Cl > O > N: oxidising property
3 C< Si > P > N: electron affinity value
4 All of these
Explanation:
C = –121; Si = –135; P = –60; N = 31. (1) As electronegativity increases, non-metallic character increases. (2) It is based on their SRP values, which in turns depends on bond energies, hydration energies and electron affinity values.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313093
In which of the following group(s) of the periodic table, m.p/b.p. increase down the group ?
1 1
2 2
3 13
4 17
Explanation:
The m.p/b.p of the elements of group 17 increase down the group while those of groups 1,2 and 13 decrease down the group.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313094
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be
1 Hg
2 Ag
3 Ga
4 Cs
Explanation:
Hg, Ga, Cs are liqiud near room temperature. But Ag (sliver) is solid.
JEE - 2022
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313095
Which is chemically most active non-metal?
1 \(\mathrm{S}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{F}_{2}\)
4 \(\mathrm{N}_{2}\)
Explanation:
\({{\text{F}}_{\text{2}}}\) is most reactive due to highest electronegativity, low bond dissociation energy and high heat of hydration of \(\mathrm{F}^{-}\)ion.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313096
The correct order of metallic character is
1 \({\text{Ca}} > {\text{K}} > {\text{Be}}\)
2 \({\text{Be}} > {\text{Ca}} > {\text{K}}\)
3 \({\text{K}} > {\text{Ca}} > {\text{Be}}\)
4 \({\text{K}} > {\text{Be}} > {\text{Ca}}\)
Explanation:
Metallic nature increases down the group due to increase in atomic radius, and decreases across a period, due to decrease in atomic radius. Hence, the correct order of metallic character is \({\text{K}} > {\text{Ca}} > {\text{Be}}\).
JEE - 2023
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313097
Which of the following order is correct?
1 F > N > C > Si > Ga: non-metallic character
2 F > Cl > O > N: oxidising property
3 C< Si > P > N: electron affinity value
4 All of these
Explanation:
C = –121; Si = –135; P = –60; N = 31. (1) As electronegativity increases, non-metallic character increases. (2) It is based on their SRP values, which in turns depends on bond energies, hydration energies and electron affinity values.