Any animal that does not have a backbone, which includes worms, insects, spiders, jellyfish etc.
if you mean the heaviest invertabre than it is the giant clam.
Vertebrate.
Yttrium is in group 3 on the periodic table, also known as the scandium group.
5' - phosphate group 3' - hydroxyl group
Phosphorus is in group 15 (or group 5A) on the periodic table, not group 3. Group 15 elements have 5 valence electrons in their outermost shell.
Group 3 and lanthanides.
Sodium is in Group 1 and Period 3 of the periodic table.
There is no element in period 3 group 6. The element at period 3, group 16 (called on very old periodic tables group VIA) is sulfur (S).
a group <3
The amino group, the carboxyl group, and the R-group
The 3 letter word for a group of kangaroos is mob.