Which equation is correctly balanced? 2P4 + 402 -- P203
2K + C12 -- 4KCI
N2 + F2 -- NF3
2H2 + O2 -- 2H2O

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

ok whats the question if not i cannot you i need question and need a thing to answer