Concept explainers
(a)
Interpretation:
The molecule or ion that is isoelectronic with
Concept Introduction:
Isoelectronic species are molecules or ion with same number of electrons.
Lewis structures represent covalent bonds and describe valence electrons configuration of atoms. The covalent bonds are depicted by lines and unshared electron pairs by pairs of dots. The sequence to write Lewis structure of some molecule is given as follows:
- The central atom is identified and various other atoms are arranged around it. This central atom so chosen is often the least electronegative.
- Total valence electrons are estimated for each atom.
- A single bond is first placed between each atom pair.
- The electrons left can be allocated as unshared electron pairs or as multiple bonds around the
symbol of the element to satisfy the octet (or duplet) for each atom. - Add charge on the overall structure in case of polyatomic cation or anion.
(b)
Interpretation:
The molecule or ion that is isoelectronic with
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The molecule or ion that is isoelectronic with
Concept Introduction:
Refer to part (a).
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ACHIEVE/CHEMICAL PRINCIPLES ACCESS 2TERM
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