Which group of atoms have nearly the same atomic radius:

Important Questions on Classification of Elements and Periodicity in Properties

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 13

The incorrect order of radius is/are:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 14

The second ionization enthalpies of elements are always higher than their first ionization enthalpies because:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 15

A large difference between the third and fourth ionization energies indicates the presence of:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 16

The ionization enthalpy will be the highest when the electron is to be removed from .... if other factors are equal:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 17

For which of the following species is the $2^{\text{nd }}\mathrm{IE}<1^{\text{st }}\mathrm{IE}$?

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 18

With reference to $1^{\mathrm{st}} \mathrm{IP}$, which are correct:
(a) $\mathrm{Li}<\mathrm{C}$
(b) $\mathrm{O}<\mathrm{N}$
(c) $\mathrm{Be}<\mathrm{N}<\mathrm{Ne}$

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 19

Values of $1^{\text{st }}$ four ionisation energies ($\mathrm{kJ}/\mathrm{mol}$) of an element are respectively $496, 4563, 6913 \text{and} 9541$. The electronic configuration of that element can be:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 5>Q 20

Which one of the following statements is correct?