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Selina Solutions Class 9 Chemistry Solutions for Exercise 4E in Chapter 4 - Chapter 4 Atomic Structure And Chemical Bonding

Question 12 Exercise 4E

a) Name the charged particles which attract one another to form electrovalent compounds.

(b) In the formation of electrovalent compounds; electrons are transferred from one element to another.

How are electrons involved in the formation of a covalent compound?

(c) The electronic confi.wration of nitrogen is (2, 5) How many electrons in the outer shell of a nitrogen

atom are not involved in the formation of a nitrogen molecule?

(d) In the formation of magnesium chloride (by the direct combination between magnesium and chlorine).

Name the substance that is oxidized and the substance that is reduced.

Answer:

a) Cation and anion

b) By mutual sharing of electrons

c) Two

d) Magnesium is oxidized and chlorine is reduced

Video transcript
"hello everyone welcome to leader learning i am gurpreet your science tutor today's question is name the charged particles which attract one another to form electrovalent compounds so these chart particles are known as cations and anions okay now the b part in the formation of electrovalent compounds electrons are transferred from one element to another how are electrons involved in the formation of covalent compound so they are involved by mutual sharing of electrons okay now the c part the electronic configuration of nitrogen is 2 comma 5. how many electrons in the outer shell of nitrogen atoms are not involved in the formation of nitrogen molecules so that will be two electrons because nitrogen forms the bond with the three only okay so the two electrons the outer shell contains five but only three are involved in the bonding okay so the two are not involved right now the d part the info the formation of magnesium chloride by direct combination between magnesium and chlorine name the substance that is oxidized and the substance that is reduced so the magnesium magnesium here is oxidized and cl here is reduced okay for more such videos please subscribe leader learning and for any doubts drop a comment thank you"
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