How many hydrogen atoms are there in 2 moles of water?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

How many neutrons does a atom of cobalt have?

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