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.
