Question

How we get that whether the valency is negative or positive?

Answer 1

take some suffix for example oxide sulphur carbonic nitrate Hindi surveillance at 2 and 4 if they have positive and not use to visit your negative because some of the time we mix the suffix and prefix then we get a compound Mac and it is always positive or negative

Answer 2

it depends upon the more reactive metal than the less
i think so it helps you
if it helps mark as it brainliest...