PLS HELP Which of these elements has the largest atomic radius
a. carbon
c. aluminum
b. potassium
d. oxygen

Which statement best describes what happens when molecular compounds melt

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars