Question

guys please please please please help me with this​

Answer 1

Answer:

(a) alkali, halogens

(b) lose

(c) gain

(d) 1s2 2s2 2p6 3s1 - (sodium is the element)

(e) Hydrogen

(f) polar, Bromine

2 (a) - Hydrogen shows following similarities with alkali metals

- same no. of valence electrons

- both show +1 oxidation state

- both are good reducing agents

Hydrogen shows following similarities with halogens.

- both have similar ionisation energies and require 1 electron to attain noble gas configuration.

- both are diatomic

- both are non metals

- both show -1 oxdn state

- both form covalent compounds.

Due to these similarities Hydrogen can be palaces in Gp1 or Gp17.

2 (b). Hydrogen can react to form both cation and anion. The H+ ion is basically a proton. The H- ion has 2 electrons and hence the negative charge.