In what respects does hydrogen resemble alkali metals? How does it res

1.	In what respects does hydrogen resemble alkali metals? How does it resemble halogen?
Answer» (i) Resemble with alkali metals: 1. It has one valence electron in s-orbital like alkali metals 2. It can lose one electron to form H⁺ ion like alkali metals. 3. It is liberated at cathode during electrolysis of compounds like H₂O, HCl etc. 4. It shows +1 oxidation state like alkali metals. 5. It is a strong reducing agent like other alkali metals. (ii) Resemblance with halogen: 1. Hydrogen is non-metal like halogens. 2. Hydrogen forms diatomic molecule like halogens. 3. It has ionization energy high like halogens. 4. Its electronegativity is similar to halogens. 5. It can gain one electron to form H^-ion. 6. When NaH is electrolysed, hydrogen is liberated at anode like halogens.

In what respects does hydrogen resemble alkali metals? How does it resemble halogen?

Answer»

(i) Resemble with alkali metals:

1. It has one valence electron in s-orbital like alkali metals

2. It can lose one electron to form H⁺ ion like alkali metals.

3. It is liberated at cathode during electrolysis of compounds like H₂O, HCl etc.

4. It shows +1 oxidation state like alkali metals.

5. It is a strong reducing agent like other alkali metals.

(ii) Resemblance with halogen:

1. Hydrogen is non-metal like halogens.

2. Hydrogen forms diatomic molecule like halogens.

3. It has ionization energy high like halogens.

4. Its electronegativity is similar to halogens.

5. It can gain one electron to form H^-ion.

6. When NaH is electrolysed, hydrogen is liberated at anode like halogens.

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