a) A, D have the same number of valence electrons (belong to the same group 2 )
(b) B2O
(c) B has more than 3 valence electrons
(d) (i) Strongest reducing agent is C. It’s the most electropositive or has the least
electrostate/electromagnetic forces hence has the highest abilityv1/2 to lose its valence
electrons
(ii) Oxidising agent is B. Has the highest ability to form negatively charged ion. Highest
ability to gain electrons up the valence energy level
(e) Ionic radius of D is less than of C due D has highest electrostatic force or greater nuclear
charge, hence the valence energy level is greatly attracted in D than in C after forming its ion
inwardly contracting the D valence energy level.
(f) Form ion by gaining electrons the , the gained electrons are being repelled by the others in
the inner energy levels and even in the same energy level. Hence making the ionic radius to
expand outwardly due to repulsive forces. Hence the atomic radius being less than its
ionic radius.
(g) (i) A and D alkali earth metals.
(ii) B halogens.
(iii) C alkali metals.
(h) B (chlorine)
- Manufacture of HCl acid.
- Disinfectant.
- Water treatment.
sharon kalunda answered the question on May 20, 2019 at 05:57
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