Question

Name (a) an alkali metal in period 3 and halogen in period 2. (b) the noble gas with 3 shells. (c) the non-metals present in period 2 and metals in period 3. (d) the element of period 3 with valency 4 (e) the element in period 3 which does not form oxide

Answer 1

Answer:

i.)sodium, fluorine

ii.)argon

iii.)fluorine,sodium

iv.)silicon

v.)argon

vi.) magnesium