A. On the Periodic Table of Elements, columns are called ; all of these elements
have the same number of .
B. On the Periodic Table of Elements, rows are called ; all of these have the same
number of .

A. On the peridic table of elemets, columns are called groups; all of these elements have the same number of electrons in the outer orbital.

B. On the periodic table of elements, rows are called periods; all of these have the same number of atomic orbitals.

I think this is right sorry if i'm wrong!

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

d

explanation: