How do you draw the Dot and Cross diagram of the Sulphate Ion?
I believe S has an expanded octet and forms 6 bonds to the O atoms (2 are double and two are single).
When you draw this out you have two of the Oxygen atoms with only 7 electrons in their outer shells. At this point add an electron into each outer-shell to make it up to 8. These two extra electrons give the ion its overall charge of 2-.
You must put square-brackets around the whole diagram and show the charge in the top-right corner.
My tip is to use dots for the O electrons and add "filled-in" dots to show they came from elsewhere.
The dot diagram for Neon is made up of two shells with the first shell having two 'dots' and the second having eight. This because the atomic number is ten. How to draw it: Have one dot in the middle and draw two circles around it. On the circle closest to the middle have two dots on it. Have eight on the outside circle.