Which statement explains why H2O has a higher boiling point than N2?
1) H2O has greater molar mass than N2.
2) H2O has less molar mass than N2.
3) H2O has stronger intermolecular forces
then N2.
4) H2O has weaker intermolecular forces than
N2.

3

Explanation:

H2O has a higher intermolecular force (hydrogen bonding) where N2 only has London Dispersion.

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.

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