Question

Which of the following are usually found in the nucleus of an atom?(a) Protons and neutrons only
(b) Protons, neutrons and electrons
(c) Neutrons only
(d) Electrons and neutrons only

Answer 1

Answer:

a

Explanation:

Answer 2

Answer:

The ‘nucleus of an atom’ consists of “protons and neutrons” only.

Explanation:

• Electrons are found in the outer orbitals surrounding the nucleus.
• Both “protons and neutrons” are found centred in the nucleus making the nucleus dense.
• The mass of “protons and neutrons” are almost the same. The No. of protons inside the nucleus is “equal to the number of electrons” outside it.
• The protons are ‘positively charged’ and the neutrons are neutral and don’t carry any electrical charges with them.
• The ‘atomic number’ is the “number of protons” present in nucleus. The total No. of “protons and neutrons” defines the atom’s mass number.