Which elements are metals? check all that apply. rhenium (re) boron (b) lithium (li) krypton (kr) phosphorus (p) mercury (hg)?

ANSWER

Lithium, rhenium , mercury , are metals out of given five elements.

As lithium is a alkali metal , rhenium and mercury both are transition metals.

based on the electronic configurations of the metals , they have valence electrons present in their valence shell  which are easily available for donation so that they can attain stable electronic configuration and thus they are considered as metals.

boron is a non metal which is the member of group 13 of the periodic table.

krypton is a noble gas which is a member of group 18 of the periodic table.

phosphorus is a non metal member of group 17 of the periodic table.

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

i think it's c. i'm not sure but i think so.