Question

explain
critical temperature
valency electron
valence shell
valency
electrovalency
covalency​

Answer 1

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Tc=)Temperature at which phase changed

The outermost electron shell of an atom is called valence shell.

The electrons present in outermost shell of an atom are called as valence electrons.

The valence electron of an atom take part in a chemical reaction because they have more energy than all the inner electrons.