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Carbon

Atomic mass o...

Question

Atomic mass of carbon is ____ u.

A

6

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B

12

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C

4

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D

8

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Solution

The correct option is B 12
Atomic mass of an element refers to the total mass of protons and neutrons in the nucleus of its atom. It is expressed as unified atomic mass unit or u.
Carbon has six protons and six neutrons in its nucleus because of which it has an atomic mass of 12 u.

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Similar questions

The atomic mass of a carbon is 6 u.

Q. A scientist collected a sample of

{CO}_{2}

gas. The total mass of carbon in the sample is 36 g. What is the mass of oxygen in the sample?

(Atomic mass of oxygen is 16 u and that of carbon is 12 u)

Q. Calculate the molecular masses of the following compounds :
(a) Hydrogen sulphide, H₂S
(b) Carbon disulphide, CS₂

(Atomic masses : H = 1 u ; S = 32 u ; C = 12 u)

Q. The mass of a neutral carbon atom in ground state is
(a) exact 12 u
(b) less than 12 u
(c) more than 12 u
(d) depends on the form of carbon such as graphite of charcoal.

Relative abundance of isotopes of carbon are as follows:-

Isotopes	Relative abundance	Atomic Mass
C-12	$98.892$	12
C-13	$1.108$	13.00335
C-14	$2 \times 10^{- 10}$	14.00317

The average atomic mass of carbon will be:-

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