Question

Chromium pentoxide (Cros), has four peroxide
oxygen atom in a molecule. Percentage of peroxide
oxygen (by weight) present in it (atomic mass of
chromium is 52 u) is
(1) 48.48%
(2) 60.6%
(3) 24,25%
(4) 30.3%​

Answer 1

1: 48.48₹

2: 60.6₹

3:24.25₹

4:30.3₹