Question

If the atomic number of an element is 6 and its mass number is 13.How many protons are contained in the nucleus

a.6
b.13
c.7
d.8

Answer 1

Answer:

the number of protons is equal to 6 , so the number of neutrons is 8

Hope it helps you

Answer 2

Answer:

option (a) 6

Explanation:

The atomic number of an element is the number of protons in the nucleus of an atom of the element.

Since the atomic number of the element is 6, number of protons is also equal to 6.

• The mass number of an element is the sum of the protons and neutrons.
• Number of neutrons is calculated by subtracting the atomic number or the number of protons from mass number.

• Isotopes are elements which have the same number of protons and electrons but differ in the number of neutrons.
• Isobars are elements with same mass number but different atomic number.
• Isotones are elements with same number of neutrons but different number of protons.