Question

name the following 1 an element having valency 0...2 metal with valency 1......3 atoms of the same element differing in mass no......4 bond formed by transfer of electrons.....5 ion formed by gain of electrons​

Answer 1

1.Helium, Neon etc

2.hydrogen, helium etc

3.Isotopes are atoms that have the same atomic number (and are therefore of the same element) but different mass numbers.

4.The attraction between oppositely charged ions is called an ionic bond, and it is one of the main types of chemical bonds in chemistry. Ionic bonds are caused by electrons transferring from one atom to another.

5.Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells. When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions.

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