Boron is an element. knowing which of the following about a typical boron atom would best you calculate its mass? a. the volume of the atom b. the total number of protons and electrons in the atom c. the charge on the atomic nucleus d. the charge of a proton in the atom e. the total number of protons and neutrons in the nucleus

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6