Question

Which one of the following statements is not truet
(1) Most of the space in an atom is empty.
(2) The total number of neutrons and protons 19
always equal in a neutral atom.
(3) The total number of electrons and protons in
an atom is always equal.
(4) The total number of electrons in any energy
level can be calculated by the formula 2n?
Valency is the
​

Answer 1

2•} Is not true..........

Answer 2

Answer:

the total number of neutrons and protons always equal in the natural atom.