Question

An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct? *

An atom of sodium has 11 protons, 11 electrons, and 11 neutrons.

An atom of sodium has 11 protons, 12 electrons, and 11 neutrons.

An atom of sodium has 11 protons, 11 electrons, and 12 neutrons.

An atom of sodium has 11 protons, 12 electrons, and 12 neutrons.

Answer 1

the third one is correct

Step-by-step explanation

because atomic number and proton &electron number is same . neutron number is solved as atomic mass minus atomic number ( N=atomic mass - atomic number)