Atomic Structure Question 94

Question: 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 [Pb. PMT 2000]

Options:

A) 8

B) 16

C) 32

D) 64

Show Answer

Answer:

Correct Answer: C

Solution:

Number of electrons in nitrogen = 7 and number of electron is oxygen = 8 we know that formula of nitrate ion is $ NO_3^{-} $ 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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