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Chemical Bonding And Molecular Structure

Question
CBSEENCH11005706
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Why are lone pair-lone pair repulsion stronger than lone pair-bond pair.

Solution

The lone pairs are localised on the central atom, while each bonded pair is shared between two atoms. consequently, the lone pair electrons in molecules occupy more space as compared to the bonding pair electrons. This causes greater repulsion between lone pairs of electrons as compared to the lone pair -bond pair and bond pair-bond pair repulsion.

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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