Question on: JAMB Chemistry - 1992
How many lone pairs of electron are there on the central atom of the H2O molecules?
A
1
B
2
C
3
D
4
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Correct Option: A
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The electron-dot structure of NH 3 places one pair of non-bonding electrons in the valence shell of the nitrogen atom. This means that there are three bonded atoms and one lone pair for a coordination number of four around the nitrogen, the same as occurs in H 2O.
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