Q.

First four ionization energy values of an element are 191, 578, 872 and 5972 K.Cals The number of valence electrons in the element is

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a

4

b

3

c

1

d

2

answer is B.

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Detailed Solution

First three I.P values are low and the fourth suddenly increasing means 3 valency e−  are present
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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Best Online Course for CBSE
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