Question

As compared to ${}^{12}C$ atom, ${}^{14}C$ atom has

• A. two extra protons and two extra electrons
• B. two extra protons but no extra electrons
• C. two extra neutrons and no extra electrons
• D. two extra neutrons and two extra electrons

Answer 1

Answer: (C)

For ${}_6^{12}C,A=12=N+Z,Z=6$
$\Rightarrow N=6$
For ${}_6^{14}C;A=14=N+Z,Z=6$
$\Rightarrow N=8$
Also, number of electrons in both atoms
$=$ number of protons $=Z=6$.