Question 9 A strip of metallic magnesium was reacted with 100g of water. Mr. Kolex asked the students to observe the changes
made from the moment the magnesium was dropped into the pure water until the final stage. After the reaction,
students were asked to calculate the mass of magnesium hydroxide produced
(2mks)​

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the correct answer would be d. hope this !