Question

The nucleaus of an atoms contains 9 protons and 10 nutrons.Name atom abd calculate the following i)Atomics number
ii)Mass number
iii)Number of Electrons​

Answer 1

Answer:

1) 9

2) 18.998

3) 9

Explanation:

since number of electrons is equal to number of protons, so no.of electrons present is equal to 9.

number of electrons is equal to atomic number of an element, so atomic number is 9.

from atomic number we can identify the element i.e; flourine, so the atomic mass is 18.998