eight.
six
Calcium has two valence electrons, so it would have two electron dots in a Lewis electron dot diagram.
Chlorine has 7 dots in its electron dot diagram, representing its 7 valence electrons.
Barium, with an atomic number of 56, has two valence electrons. Therefore, in an electron dot diagram, there would be two dots drawn around the symbol for barium.
sulfur has six valence electrons. Put 2 at the top of sulfur, two more at left, then one at right and one below. Add a hydrogen atom (each with one electron) at the single electron places of sulfur. sulfur gets the octet, each hydrogen gets 2 electrons to fill up its little orbital.
six
six
six
six
Sulfur is in group XVI (or 6A) and so has 6 valence electrons. The electron dot diagram for S would thus have to show (b) six dots.
Calcium has two valence electrons, so it would have two electron dots in a Lewis electron dot diagram.
it has 6
Chlorine has 7 dots in its electron dot diagram, representing its 7 valence electrons.
The Lewis dot diagram for SiS2 would show Silicon (Si) at the center with one sulfur (S) atom on each side. Each sulfur atom would have six dots around it to represent its valence electrons, while silicon would have four dots around it.
silicon
silicon
There is two dots above the Mn, there your two S dots