Question

3. Alpha particles carry two units of positive charge and four units of mass​

Answer 1

Answer:

How many electrons are involved in the following redox reaction?

Cr2O7

2- + Fe2+ + C2O4

2- → Cr3+ + Fe3+ + CO2 (Unbalanced)

(1) 3

(2) 4

(3) 5

(4) 6