Successive ionisation energies of an element ' X ' are given below (in k cal ): IP 1 IP 2 IP 3 IP 4 165 195 556 595 Electronic configuration of the element ' X ' is:

1 s 2 , 2 s 2 2 p 6 , 3 s 2 3 p 2

Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 55

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Element having maximum number of low shielding electrons:-

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Important Questions on Classification of Elements and Periodicity in Properties

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 56

Incorrect order of ionic radius is:-

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 57

According to Slater's rule, order of effective nuclear charge for last electron in case of

Li, Na

and

K

:-

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 58

Rank the

4 p, 4 d

and

4 f

orbitals of increasing order in which the electrons present in them are shielded by inner electrons

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 61

The second ionisation potentials in electron volts of oxygen and fluorine atoms are respectively given by

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 63

Compared to the first ionisation potential, the value of second ionisation potential of an element is:-

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 71

Successive ionisation energies of an element $' X'$ are given below (in $k cal$ ):

${IP}_{1}$	${IP}_{2}$	${IP}_{3}$	${IP}_{4}$
$165$	$195$	$556$	$595$

Electronic configuration of the element $' X'$ is:

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 87

Which one of the following has highest ionisation potential:-

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Beta Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>EXERCISE-I (Conceptual Questions)>Q 96

Element of which atomic number has highest electron affinity:-

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