Answer:
Compound
Explanation:
-compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
Could you post another question with a photo? I am sorry...
There is no table, but anything in the column under Flourine (F) has a -1 charge. Hope this helps :)
Out of the options, "Iron" is the most dense here.
In short, Your Answer would be Option D
Hope this helps!