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(i) The type of bond that is formed between X and chlorine is electrovalent or Ionic bond due to the transfer of electron between the atoms. The atom of X losses 2 valence electron and these 2 valence electrons are being accepted by two chlorine atoms. As a result of this reaction, the compound formed is an electrovalent or ionic compound.
(ii) The explanation of the formation of bond between the Element X and the element chlorine is shown below: X has the electronic configuration of 1S2, 2S2, 2P6, 3S2, 3P6, 4S2. This means that the element X has valence electrons of 2. During the reaction with Chlorine, this element X loses two valence electrons completely to two atoms of chlorine.
Each chlorine atom has a valence electron of 7. Chlorine atom requires 1 electron to attain a stable octet structure while the element X needs to lose two valence electrons it possesses to attain a stable octet configuration of the noble gases. Through the reaction above, each of the atoms involved in the bond –chlorine and X completes its outermost octet electronic structure of stability as the noble elements.
Chlorine did so by accepting 2 electrons, one for each atom to become Cl while X lost its 2 valence electron. They then get closer together with each other and form an aggregate of ions of opposite charges.
(iii) The formula of the compound formed by reacting chlorine to element X is XCL2.
Three among all the characteristics of the compound formed are:
The compound is readily soluble in water.
It is a good conductor of electricity due to it electrovalent or ionic nature.
The compound will have high melting and boiling point because of the strong electrostatic force of attraction between chlorine and the atom of the element X which are electrovalently held together.
Regards
Arun (askIITians forum expert)
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