Q.

Statement (A): Oxidation number of Mn in KMnO4 is +7.

Statement (B): The oxidation number of an atom in its elementary form is zero.

Statement (C): Sodium exhibits +2 oxidation state.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

A and B are correct but C is incorrect

b

All the above statements are incorrect

c

All the above statements are correct

d

A and B are incorrect but C is correct

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

(i) According to oxidation number rules, first two statements are correct, statement III is incorrect.

Oxidation state of Mn in KMnO4

+1+x+(2×4)=0+1+x+(8)=0x=+7

Sodium exhibits +1 oxidation state but not +2.

(ii) The oxidation number of an atom in its elementary form is zero.

(iii) Sodium exhibits +1   oxidation state because it is in IA group.

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon