1. an atom of silicon has a mass number of 28 and an atomic number of 14. how many protons and how many neutrons are in this atom? show your calculation.

Atoms are the smallest indivisible units, which consists of neutrons, protons, and electrons. The silicon atom has mass number 28 and atomic number as 14.

Silicon or Si belong to the group 14 and period 3. Silicon is hard, brittle, and crystalline element. It is widely used to make polymers and glass.

The number of protons in silicon is 14.

Mass number = Number of protons + Number of neutrons

Therefore, the number of protons and neutrons are 14 in Silicon.

To know more about Silicon, refer to the following link:

link

explanation:

i think option no d is the correct answer

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons