Please help me. someone deleted my question before so I'm trying again.

See Explanation.

Explanation:

Element Name: Neon (check a periodic table)

Atomic Number: 10 (number of protons)

Atomic Mass: 20 (number of protons + number of neutrons [electrons have negligible mass])

Protons: 10 (P in the black circle)

Electrons: 10 (number of red dots)

Neutrons: 10 (N in the black circle)

Valence Electrons: 8 (number of red dots on the outermost ring)

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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.