Nitrogen atom has an atomic number of 7 and oxygen has an atomic … - Vidyadip

MCQ

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
$16$
✓
$32$
D
$64$

✓

Answer

Correct option: C.

$32$

c
(c) 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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