Question

a.
An atom with 3 protons and 4 neutrons will have a valency of
3 b. 7
1
The electron distribution in an aluminium atom is
2. 8. 3.
b. 2.8,2
8,2,30
Fill in the blanks in the following statements
Rutherford's a-particle scattering experiment led to
the
b. Istopes have same
but different
a.​

Answer 1

An atom with 3 protons and 4 neutrons will have a valency of 7

The electron distribution in an aluminium atom is

2. 8. 3.

Rutherford's α-particle scattering experiment led to the conclusion that the mass and positive charge of an atom is concentrated in the nucleus.

Answer 2

Explanation:

isotopes have same atomic number but different mass number

the number of neutrons varies.....