6- the high Energy is given to divalent metal, so is very difficult O first ionization potential
O second ionization potential
O third ionization potential
O fourth ionization potential

2b2t

explanation:

2b2t

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.

answer; 4 electrons;