On the periodic table, groups are elements with similar * O Atomic Number
O Atomic properties
O Atomic Mass
O None of the Above

atomic number

Explanation:

hope this will help u(maybe)

i'm assuming that the correct answer is indeed the first one/ "a"..

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.