Question

PLEASE HELP!!!!!

Part 1: Name two elements that have the same properties as magnesium (Mg). (4 points)

Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences. (6 points)

Answer 1

PART1: Calcium: Magnesium belongs to a group two element and its valency is two so as Calcium

Beryllium:SAME Explanation

PART 2:Potassium :Number of protons equals atomic Number ,and atomic number of

Potassium equals 19

protons =19

ELECTRONS: equals number of protons

electrons=19

NEUTRONS= mass number - protons

=39 - 19

= 20

: protons =19, electrons =19, neutrons =20