what is valency? how to find valency? please explain..
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Valency is defined as the combining capacity of an atom or a molecule. ... If the number of electrons in the outer shell is between one to four, the compound is said to have positive valency. For compounds with electrons four, five, six, or seven, the valency is determined by subtracting the electron from eight.
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the electrons which are present in last shell is called valency and when electrons are more than 4 subtract it by 8
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