Question 1 Which of the following properties uniquely identifies every element?

Number of valence electrons

Phase at room temperature

Number of protons

Charge of the atom

Number of protons

Explanation:

Elements are arranged in the periodic table in an order of increasing number of protons. It's called the proton number or atomic number.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

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.