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Nitrogen has an atomic number of 7 and o...

Nitrogen has an atomic number of 7 and oxygen has an atomic number of 8. The total number of electron in the nitrate ion `(NO_(3)^(-))` is :

A

8

B

16

C

32

D

64

Text Solution

Verified by Experts

The correct Answer is:
C
Number of electrons in nitrogen = 7 and number of electron in oxygen = 8.
We know that formula of nitrate ion is `NO_(3)^(-)` we also know that number of electrons
= (1 `xx` Number of electrons in nitrogen) + (3 `xx` number of electrons in oxygen) + 1
= `(1xx7)+(3xx8)+1=32`.
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