02. Atomic and Ionic Radii
Classification of Elements and Periodicity in Properties

89435 The difference between the radii of 3 rd and 4 th orbits of $\mathrm{Li}^{2+}$ is $\Delta R_1$. The difference between the radii of $3 r d$ and 4 th orbits of $\mathrm{He}^{+}$is $\Delta \mathrm{R}_2$. Ratio $\Delta \mathbf{R}_1: \Delta \mathbf{R}_2$ is

1 $3: 2$
2 $8: 3$
3 $2: 3$
4 $3: 8$
Classification of Elements and Periodicity in Properties

89436 The atomic radius of $\mathrm{Ag}$ is closest to

1 $\mathrm{Hg}$
2 $\mathrm{Au}$
3 $\mathrm{Ni}$
4 $\mathrm{Cu}$
Classification of Elements and Periodicity in Properties

89437 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 1
2 2
3 3
4 4
Classification of Elements and Periodicity in Properties

89438 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 4
2 1
3 2
4 3
Classification of Elements and Periodicity in Properties

89435 The difference between the radii of 3 rd and 4 th orbits of $\mathrm{Li}^{2+}$ is $\Delta R_1$. The difference between the radii of $3 r d$ and 4 th orbits of $\mathrm{He}^{+}$is $\Delta \mathrm{R}_2$. Ratio $\Delta \mathbf{R}_1: \Delta \mathbf{R}_2$ is

1 $3: 2$
2 $8: 3$
3 $2: 3$
4 $3: 8$
Classification of Elements and Periodicity in Properties

89436 The atomic radius of $\mathrm{Ag}$ is closest to

1 $\mathrm{Hg}$
2 $\mathrm{Au}$
3 $\mathrm{Ni}$
4 $\mathrm{Cu}$
Classification of Elements and Periodicity in Properties

89437 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 1
2 2
3 3
4 4
Classification of Elements and Periodicity in Properties

89438 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 4
2 1
3 2
4 3
Classification of Elements and Periodicity in Properties

89435 The difference between the radii of 3 rd and 4 th orbits of $\mathrm{Li}^{2+}$ is $\Delta R_1$. The difference between the radii of $3 r d$ and 4 th orbits of $\mathrm{He}^{+}$is $\Delta \mathrm{R}_2$. Ratio $\Delta \mathbf{R}_1: \Delta \mathbf{R}_2$ is

1 $3: 2$
2 $8: 3$
3 $2: 3$
4 $3: 8$
Classification of Elements and Periodicity in Properties

89436 The atomic radius of $\mathrm{Ag}$ is closest to

1 $\mathrm{Hg}$
2 $\mathrm{Au}$
3 $\mathrm{Ni}$
4 $\mathrm{Cu}$
Classification of Elements and Periodicity in Properties

89437 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 1
2 2
3 3
4 4
Classification of Elements and Periodicity in Properties

89438 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 4
2 1
3 2
4 3
Classification of Elements and Periodicity in Properties

89435 The difference between the radii of 3 rd and 4 th orbits of $\mathrm{Li}^{2+}$ is $\Delta R_1$. The difference between the radii of $3 r d$ and 4 th orbits of $\mathrm{He}^{+}$is $\Delta \mathrm{R}_2$. Ratio $\Delta \mathbf{R}_1: \Delta \mathbf{R}_2$ is

1 $3: 2$
2 $8: 3$
3 $2: 3$
4 $3: 8$
Classification of Elements and Periodicity in Properties

89436 The atomic radius of $\mathrm{Ag}$ is closest to

1 $\mathrm{Hg}$
2 $\mathrm{Au}$
3 $\mathrm{Ni}$
4 $\mathrm{Cu}$
Classification of Elements and Periodicity in Properties

89437 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 1
2 2
3 3
4 4
Classification of Elements and Periodicity in Properties

89438 Which of the following statement is correct about "shielding effect" ?
1. It is effective, when the orbitals in the inner shells are completely filled.
2. Inner shells do not show any effect.
3. With increase of shielding down the group, ionisation energy increases.
4. With increasing nuclear charge, the shielding effect increases.
2. Inner shells are show effect. So, statement 2 is incorrect.
3. Shielding effect as well as ionisation energy decrease down the group. So, statement 3 is incorrect.
4. With increase in nuclear charge, shielding effect decreases. So, statement 4 is incorrect.

1 4
2 1
3 2
4 3