What is acid rain? which fossil fuel causes acid rain? what are the chemical reactions that produce the acid?

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

When we burn the coal that produce sulfur dioxide .

The correct answer is :15 protons and 15 electrons.

Explanation:

Atomic number of an elements tells us total number of protons present in the an atom. And as we know that atom is an electrically neutral sphere so, atomic number also tells us about the total numbers of electron present in an atom of an element.

Atomic mass of an element tells us about the total number of neutrons and protons present in the nucleus of an atom.

Phosphorous has atomic number of 15 which means that in single phosphorus atom there are 15 protons and 15 electrons.