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Chemical Bonding And Molecular Structure

Question
CBSEENCH11008226
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Predict the correct order among the following.

  • long pair-lone pair> bond pair-bond pair> lone pair>bond pair

  • bond pair-bond pair> lone pair-bond pair > lone pair -lone pair

  • lone pair -bond pair > bond pair- bond pair> lone pair -lone pair

  • lone pair - lone pair > lone pair-bond pair > bond pair -bond pair

Solution

D.

lone pair - lone pair > lone pair-bond pair > bond pair -bond pair

According to the VSPER theory, a lone pair occupies more space than a bond pair, Hence when lone pair-lone pair interacts with each other they repel more and thus the correct order is:
lone pair - lone pair > lone pair-bond pair > bond pair -bond pair.

Some More Questions From Chemical Bonding and Molecular Structure Chapter

What is crystal lattice?

What is electrovalency?

What bond is present in MgCl2 molecules?

Write Lewis dot symbols for atoms of the elements Mg, Na, B, O, N, Br.

Draw the Lewis structure for the ionic compound by aluminium and fluorine.

Two elements A and B have the electronic configuration as:
A = 1s22s22p63s2 and B = 1s22s22p5
Write the empirical formula of the substance containing A and B.

What type of bonding would you expect between:
(i) a metal and a non-metal
(ii) a non-metal and another non-metal?

Give reasons in one or two sentences for the observation that in their compounds non-metals form anions and not cations.

Out of Na and K, which will form a more stable ionic bond?

Which will have a greater lattice enthalpy: NaCl or MgO?

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