Generally, when food is cooked: choose all that apply

The food absorbs energy.

An exothermic reaction takes place in the food.

An endothermic reaction takes place in the food.

increased stability in the completion of fluorine's outer shell.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8