List the following gas-phase ion pairs in order of the quantity of energy released when they form from separated gas-phase ions. list the pair that releases the least energy first.

(a)na+f−
(b)mg2+f−
(c)na+o2−
(d)mg2+o2−
(e)al3+o2−

rank ion pairs from least to most energy released.

h let me think

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

points

explanation: