Question

9-
19. The ratio of Fe3+ and Fe2+ in Fe0.9S1.0 is
(1) 0.28
(2) 0.5
(3) 2
(4) 4

Answer 1

The ratio of Fe3+ and Fe2+ in Fe0.9S1.0 is?

=> 0.5

Answer 2

$\huge \ \fcolorbox{pink}{pink}{ANSWER.}$

$<marquee > 0.5$