Verified Answer :

Atomic mass increases when:  1) We go to the right from the left
                                                  2) We move down the group

Hope this helps!

Answer:

ruw9nhguerg9oewrnhker h erhwiejrherwohpkeroh

Explanation:

nainwe hjernopegwrmohik rephoiegnqwunhrpo

rw;b][qer,ohj30ps

=`24lpe,rfjreopih\(9, 7)

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