what is valency ? explain valency of radicals based on a charge and on the basis of hydrogen atom
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valency of an element measures combining capacity of atoms when it form chemical compound or molecules
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What is Valency?
the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.
explain valency of radicals based on a charge and on the basis of hydrogen atom?
Count how many hydrogen atoms are in the formula. This is the valency of the radical. For example, H2SO4 has two hydrogen atoms, so the valency of sulfate is two. Because sulfate can bond with two positive hydrogen atom, its valency is the opposite charge and often expressed as 2-.
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