Ethanol is used in some after-shave lotions and deodourants. What properties makes it suitable for these uses?

Its ability to denature bacterial proteins

Explanation:

Ethanol is a rapid antimicrobial against bacteria, fungi and viruses. When 70% concentrated Ethanol is in contact with a single celled organism, the it coagulates the protein at a slower rate, creating enough time for it to penetrate the cell before coagulation can block it.This will make the whole cell coagulated thus killing the cell.

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.

a electronegativity decreases beacuse the size of nucleus is bigger.