Atomic number of an element is 17 and mass number is 35. How many protons and neutrons are in the nucleus of an atom of this element?

Question

Accepted Answer

Problem solving strategy:

Number of protons are equal to atomic number and number of neutrons $=$ mass number $-$ atomic number

Solution:

Number of protons $=$ atomic number $=$ 17

Number of neutrons $=$ mass number $-$ atomic number

$= 35 - 17 = 18$