Please help me on this question!

How many atoms are there in 5.70 mol of mg

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Consider the story you just read. all but one of the choices below indicate that something is living.