Home Chemistry Structure of Atom Atomic Number, Mass Number, Atomic Species Nitrogen atom has an atomic number of 7 and …
Chemistry Structure of Atom Atomic Number, Mass Number, Atomic Species Single Correct MCQ
Published on: August 13, 2026

Nitrogen atom has an atomic number of 7 and oxygen has an atomic number 8. The total number of electrons in a nitrate ion will be

A
8
B
16
C
32
D
64

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Text Solution

Verified by Experts
The correct answer is:
C

Number of electrons in nitrogen = 7 and number of electron is oxygen = 8 we know that formula of nitrate ion is we also know that number of electron

= (1 × Number of electrons in nitrogen)

+ (3 × number of electrons in oxygen) + 1

= (1 × 7) + (3 × 8) + 1 = 32.

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