solve the following questions

solve the following questions Bromine Ime shape of a gryphite crystals is (a) tetrahedral (b) pyamidal (9) octahedral. 4. The compound tot-med by the combination of t'.so elements with a large electro negativity difference is likely to be (a) polar covalent (b) giant molecular (c) cosalent (d) Ionic. 5. In a chemical reactions. the strongly electropositive metal sodium gives out outmost electron to form a'an (a) co- ordinate compound (b) ionic compound (c) covalent compound (d) hydrogen compound 6. A metal that is widely used in manufacture of paints and ox erhead electric cables is (a) aluminium (Y) copper (c) iron (d) lead. 7. The halogen that gixes starch blue black colouration is (a) chlorine (b) bromine (c) fluorine iodine S, of the töiloxving substances is mainly responsible for the depletion of the ozone lay-•r (a) Oxygen (b)