The gases listed are at standard temperature and pressure:
. 1 mol of Co, gas
• 1 mol of N, gas
• 2 mol of O, gas
Which statement is correct?
The volume of 1 mol of CO, is greater than that of 2 mol of 02.
The volume of 1 mol of Co, is greater than that of 1 mol of N.
The volumes of 2 mol of O2 and 1 mol of N, gases are the same.
The volumes of 1 mol of CO, and 1 mol of N, gases are the same.

The volumes of 1 mol of CO, and 1 mol of N, gases are the same.

Explanation:

Equal volumes of gases have the same number of moles.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)