Which of the following statements are correct for group I metals?
(i) They all have one electron in the outer shell preceded by a closed shell containing eight electrons.
(ii) The compound iof group I metals are generally ionic and exists as high meltion point solids in which as many ions of opposite charge surround each other as possible.
(iii) Their compounds are generally water soluble and white, unles anions coloures.
(iv) The reactivity increases from Lithum ot casesium.

Options

A. I,ii,iv
B. iii,iv
C. ii,iii,iv
D. All are correct

Answer

D