How many electrons are needed to completely fill the orbitals from 1s to 4p?

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Which is true about metals used for jewelry, such as platinum and gold? a. they have low flammability. b. they have low reactivity. c. they have high flammability. d. they have high reactivity.