Radiation is a method of thermal energy transfer. It refers to the transfer of heat energy that moves- O through empty space.
O when objects touch
O only through solids.
O only through solid and liquids.

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