a) berylliumb) potassiumc) bromined) oxygen2Tell me the chemical formula for the compound formed by each of the following combinations of elements: a) lithium and iodineb) calcium and brominec) sodium and oxygend) aluminum and chlorine3Name each of the compounds in Q 3.4For each of the following atoms:a) a boron atomb) a chlorine atomc) a nitrogen atomd) a magnesium atomState the number of electrons lost or gained to from the ion.State the ionic charge of each ion
1Charges: a) Beryllium - 2+ b) Potassium - 1+ c) Bromine - 1- d) Oxygen - 2- 2Compound formed: a) Li + I2 - 2LiI - Lithium iodide b) Ca + 2Br - CaBr2 - Calcium bromide c) Na + O2 - Na2O - Sodium oxide d) Al + 3Cl - AlCl3 - Aluminum chloride 3Charges and electrons lost: a) Boron - 3+, 3 electrons lost b) Chlorine - 2-, 2 electrons gained c) Nitrogen - Can be 5+ or 3-, 5 lost or 3 gained d) Magnesium - 2+, 2 electrons lost
