Question

What is the number of neutrons present in $\mathrm{C}-14$ isotope of carbon?

Answer 1

Step 1: Given:

$\mathrm{C}-14$ isotope

Thus, mass number$=14$

Step 2: Formula Used:

Mass number$=$Number of protons$+$Number of neutrons

Step 3: Calculate the number of protons in $\mathrm{C}-14$ isotope:

Number of protons is equal to the atomic number.

Atomic number of carbon is $6$.

Thus, the number of protons in $\mathrm{C}-14$ isotope are $6$.

Step 4: Calculate the number of neutrons in $\mathrm{C}-14$ isotope:

Mass number$=$Number of protons$+$Number of neutrons

Thus,

Number of neutrons$=$Mass number$-$Number of protons

Substitute $14$ for the mass number and $6$ for the number of protons. Thus,

Number of neutrons$=14-6$

Number of neutrons$=8$

Thus, the number of neutrons in $\mathrm{C}-14$ isotope is $8$.