Determina la masa en g, de 1.35 moles de W

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Non renewable resources like petroleum eventually