Tag: inside the atom

Questions Related to inside the atom

The nucleus of the atom $\left( Z>1 \right) $ consists of:

chemistry inside the atom history of atomic model atomic theory of dalton daltons atomic theory

  1. Proton and neutron.

  2. Proton and electron.

  3. Neutron and electron.

  4. Proton, neutron and electrons

Show answer
Correct Option: A
Explanation:

The atomic nucleus is the central area of the atom. It is composed of two kinds of subatomic particles: protons and neutrons.The protons and neutrons held together to form the dense area of the nucleus.

For atoms havng $Z>1$ nucleus contains protons and neutrons.

Which of the following species has more number of protons than the number of electrons?

chemistry inside the atom history of atomic model atomic theory of dalton daltons atomic theory

  1. $F^-$

  2. $Na^+$

  3. $O^{2-}$

  4. $Ne$

Show answer
Correct Option: B
Explanation:

A positively charged species has more number of protons than the number of electrons.
No. of protons in $Na^+$ = Atomic number of $Na$ = $11$
No. of Electrons in $Na^+ = 10$