Hydrogen is group with alkali metals because it a. is a metal b. has one electron in its outer energy level c. it is a gas d. does not readily form compounds

I think it's B.

Explanation:

Hope my answer has helped you!

Hello There!

Hydrogen is group with alkali metals because it "does not readily form compounds"

Hydrogen is found in many substances. Our body needs Hydrogen because essentially everything we see contains Hydrogen.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.