Q. Number of neutron in $C^{12}$ is:

1639 200 Bihar CECEBihar CECE 2005Structure of Atom Report Error

A

6

85%

B

7

7%

C

8

7%

D

9

2%

Solution:

No. of neutron =Atomic mass atomic number. For $C^{12}$ No. of neutron $= 12 - 6 = 6$