Question

1. the atomic number tells you the number of protons in one atom of an element. it also tells you the number of neutrons in a neutral atom of that element. the atomic number gives the “identity “of an element as well as its location on the periodic table. no two different elements will have the same atomic number.
2. the mass number of an element is the total number of protons and neutrons in the i of the atom.
3. the mass number is used to calculate the number of neutrons in one atom of an element. in order to calculate the number of neutrons you must subtract the from the
4. give the symbol and number of protons in one atom for each of the following elements:

Explanation:

Step1: Recall atomic number concept

Atomic number = Protons = Electrons in neutral atom. No two elements have same atomic number.

Step2: Recall mass - number concept

Mass number is sum of protons and neutrons in nucleus. Neutrons = Mass number - Atomic number.

Answer:

1. Protons; Electrons; Same
2. Mass number; Nucleus
3. Neutrons; Atomic number; Mass number