Question

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148. Which electronic configuration indicates
a cation ?
(A) 17p, 17e, 18n
(B) 15e, 16p, 17n
(C) 19e, 20n, 17p
(D) 9p, 10n, 10 e​

Answer 1

ELECTRONIC CONFIGURATION FOR CATION:

• 15e , 16p , 17n

But why?

• First of all, cation is an ion, in which the total number of electrons is lesser than the total number of protons and hence the ion is positively charged.

• In the given option,

Total electrons = 15

Total protons = 16

Since the number of protons > number of electrons, we can say that it's a cation.

$\star$ Hope It Helps.

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• Example of some cations:

1. Ca+2, Na+, Al+3 , etc.

• Examples of anions:

2. Cl- , Br- , I- , etc.