All scientific names, such as the scientific name for honey bees, Apis mellifera, are part of a binomial nomenclature. Which of the following statements about scientific names is true?
A. The second name in a scientific name represents the phylum.
B. The first name in a scientific name represents the genus.
C. Scientific names for common species only have one word.
D. Species typically have several different scientific names.

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

the answer to this question is 3.