Question

for an atom of sodium (mass number=23) indicates the following information

A) chemical symbol
B) atomic number
C) number of protons
D) numbers of neutrons
E) number of electrons​

Answer 1

Answer:

a. Na

b. 11

c. 11

d. 12

e. 11

Answer 2

Answer:

Mass number of atom = 23

Atomic number of atom = 11

As, no. of electrons in an atom is equal to an atomic number of the element.

So, number of electrons = 11

Secondly , number of protons are equal to number of electrons.

so, number of protons = 11

And number of neutrons = mass number - atomic number = 23−11 = 12

so, number of neutrons = 12

So , the atom contains 11 protons, 11 electrons, 12 neutrons.