How do i find the Valency of an element? is there any formula or short trick to find it.

## Discy Latest Questions

Mr 10thVice-Principal

### Poll Results

Based On 38 Votes

### Participate in Poll, Choose Your Answer.

How Many Hours Should a 12th Class Science Student Study in a Day ? How Many hours for PCM ? How Many hours for Mathemetics ? How Many Hours for Chemistry ? How Many Hours for Physics ? Also Guide for other remaining Subjects

Mr 10thVice-Principal

Can anyone guide me for my coming 10th class board exam in 2020? How can i secure full marks in Mathematics?

I want to know; Which books are the best for class 10 board exam in 2020 specially for mathematics,English and science text books and 10 years questions bank