Question

arrange NaCl, MgCl2 and AlCl3 in inc. order of covalent character

Answer 1

Nacl<Mgcl2<Alcl3

So ions are-Na+ ; Mg2+ ;Al3+

Because polarization is directly proportional to the charge

More charge=more polarization =more covalent nature.

Answer 2

Arrangement of the given compound based on increasing order of covalent character.

• The given compound are $NaCl$, $MgCl_2$, and $AlCl_3$. The concept involved to arrangement of the given compounds based on the increasing character of covalent character are:

1. Small size of the cations.
2. High charge of the cations.

• The cation present in the given compounds are $Na^+, Mg^{2+}$ and $Al^{3+}$. These belong to $3^{rd}$ period of the periodic table.
• When we move from left to right in the period, the charge of cations increases and the size of the cations decreases.
• Accordingly, when the given cations are arranged it gives the following order:

$Na^+<Mg^{2+}<Al^{3+}$

• As per the above condition, the arrangement of given compounds in increasing order of covalent character is as follows:

$NaCl<MgCl_2<AlCl_3$

Learn more about such concept

Explain the covalent character of lithium chloride using fajans rule

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Out of fecl2, sncl2,alcl3 and mgcl2 which shows maximum covalent character

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