Question

An atom of sodium-23 (Na-23) has a net charge of +1. identify the number of protons, neutrons, and electrons in the atom. then, explain how you determined the number of each type of particle.

Answer 1

Answer: In Na-23 atom having +1 charge, the number of

1) Protons = 11

2) Electrons = 10

3) Neutrons = 12

Explanation: There are 3 subatomic particles present in any nucleus: Protons, neutrons and electrons.

For a given
`_(11)^(23)Na`

where, 11 = Atomic number

23 = Atomic mass

For an atom having +1 charge on it, the

Electronic configuration for
`_(11)^(23)Na=1s^22s^22p^63s^1`

Electronic configuration for
`Na^+=is^22s^22p^6` (It will loose one electron)

• Number of electrons = Sum of the superscripts in the above electronic configuration

Number of electrons = 10

• Number of protons = Atomic number

Number of protons = 11

• Atomic mass = Number of protons + Number of neutrons

Number of neutrons = 23 - 11 = 12