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Byju's Answer
Standard X
Chemistry
Molecular Mass
The molecular...
Question
The molecular mass of
N
H
3
is ________.
A
16 u
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B
18 u
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C
10 u
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D
17 u
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Solution
The correct option is
D
17 u
Molecular mass is equal to the sum of the masses of its constituent atoms.
Atomic mass of nitrogen = 14 u
Atomic mass of hydrogen = 1 u
∴
Molecular mass of
N
H
3
= atomic mass of nitrogen + 3
×
atomic mass of hydrogen
= 14 + (3
×
1) = 14+3 = 17 u.
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