Three for each Ferric ion and 2 for each Oxide ion, so twelve (3x2 + 2x3) all together:
O::Fe:O:Fe::O
Yes, the dots in an electron dot diagram represent valence electrons.
17
six
silicon
2
two
Two dots are shown in the electron dot diagram for calcium in group 2 and period 4 with 20 protons and 20 electrons.
Yes, the dots in an electron dot diagram represent valence electrons.
There is two dots above the Mn, there your two S dots
it has 4 dots
17
six
six
six
six
Yes, in a Lewis diagram, the valence electrons are shown by dots around them.
1. An electron dot diagram can show you that the symbols for an element surrounded by dots. Each dot stands for one valence electron.