i think its 4 though ive herd it to be 6 by some, ur best bet is to use the Periodic Table.
There are 4 valence electrons in lead.
Lead has 4 valence electrons.
As is present in group-15. It has 5 valence electrons.
5
There are 4 valence electrons in lead.
One
oxygen has 6 valence electrons as indicated by the 6A above the group oxygen is in
Strontium has 2 valence electrons. It is in group 2 of the periodic table, which means it has 2 electrons in its outermost energy level.
4
A bromine anion (Br-) contains 8 valence electrons. Bromine is in group 7A of the periodic table and has 7 valence electrons. When it gains an extra electron to form an anion, it now has a total of 8 valence electrons.
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6