What element reacts like phosphorus but has more atomic mass

arsenic reacts like phosphorus but has more atomic mass

c. 75.7

i think that is the right

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.