What do we call those particles which have more or less electrons than the normal atoms?

3 What would be the electron-dot structure of carbon dioxide which has the formula CO₂? 4 What type of chemical bond is formed between:

(a) potassium and bromine?

(b) carbon and bromine?

5 What do we call those particles which have more electrons than the normal atoms ? 5 What do we call those particles which have less electrons than the normal atoms?