Which of the following statements is correct ?
(i)The s-blocks metals occut as chlorides, slicates and carbonates
(ii)The d- and p- block metals and found as oxides and salphides and axcept for the group `3` metals which occure as phophates, and the platimum group metals and gold which occut in uncombined form
(iii)There is no minetral source of technetium `(Tc)`, is radinactive element that is made in nucles reactors
(iv) All the laothanides `(Ce" to "lu)` occur as phophates