Question
Give the name and atomic number of the inert gas tom in which total number of d-electrons is equal to difference in number of total 'p' and s-electrons.
✓
Answer
$\operatorname{Kr}(36) 1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^2 3 d^{10} 4 p^6$
Number of d-electrons $=10$
Number of p-electrons $=18$
Number of s-electrons $=8$
Difference in 'p' and 's' electrons $=18-8=10$
Number of d-electrons $=10$
Number of p-electrons $=18$
Number of s-electrons $=8$
Difference in 'p' and 's' electrons $=18-8=10$
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