Question

Compare the properties of alkali metals and halogens with reference to:
i)Valency
ii) Valence electron
iii)Oxidising and reducing nature
iv) Electropositive or electronegative behavior​

Answer 1

Answer:

ii) Valency electron is answer

Answer 2

Answer:

1.electron affinity - low for alkali metals and high for halogens.

2. valency alkali metals 1 ND halogen -1

3. ionisosation energy - low for alkali metals and high for halogen.

4. electronegetivity - low for alkali metals and high for halogens

5 nature of oxides - electrovelent for alkali metals and co- velent for halogens

Explanation:

The atomic size of 'alkali metals' is larger than that of halogens. Halogens and alkali metals both form oxides. However, alkali metals form 'basic oxides' halogens form acidic oxides. Alkali metals and halogens form ionic compounds because there is exchange of ions between them when they react with each other.