gallium
atomic no 31
period 4
grp 3a / 13
charge 3+
atomic no 34
selenium
se
period 4
grp 6A/16
charge 2-
kr
group 18 atomic 36
period 4
noble gas
krypton
arsenic
As
33
grp 15/5a
period 4
charge 3-
atomic 32
germanium
period 4
grp 14/ 4a
bromine
atomic 35
period 4
grp 17/ 7a
1- charge
scandium
21
period 4
transition metal
25
manganese mn
transition
co
27
titanium
22
29
cu copper
28
nickel
zn
30
not transition metal
23
vanadium
chromium
24