*H
*|
:N-H
*|
*H
(Ignore the asterisks, they serve only for spacing.)
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The Lewis dot structure for NH3 shows Nitrogen with three single bonds to Hydrogen atoms, representing a total of 8 valence electrons. Nitrogen also has one lone pair of electrons, giving it a total of 8 electrons around it, satisfying the octet rule.
The Lewis dot structure for NH3 starts with an N atom connected on three sides with a dash, each to an H atom. The N atom then has two dots on the unconnected side.
N
/ | \
H H H
N atom undergoes sp3 hybridisation.
Shape : Trigonal pyramidal
Molecules of NH3 is polar
Amide Anion NH2-
. .
H - N - H
. .
The unpaired electrons need to be on the Nitrogen because Hydrogen cannot hold more that 2 valence electrons.
Electron dot structures are sometimes called Lewis dots or Lewis structures because they were introduced by American chemist Gilbert N. Lewis in the early 20th century. Lewis used dots, or small circles, to represent valence electrons around atoms in a chemical structure, which is why these diagrams are often referred to as Lewis dots or Lewis structures.
Dot diagrams, also known as Lewis dot structures, were introduced by the American chemist Gilbert N. Lewis. Lewis developed these diagrams to illustrate the bonding between atoms in a molecule by representing the valence electrons as dots around the atomic symbols.
The Lewis dot structure of O2 has a double bond between the two oxygen atoms, each oxygen atom has 6 valence electrons. The Lewis dot structure of N2 has a triple bond between the two nitrogen atoms, each nitrogen atom has 5 valence electrons.
NH3 is an example of a Lewis base as it can donate a pair of electrons to form a bond with a Lewis acid. Lewis bases are electron pair donors, while Lewis acids are electron pair acceptors.
You will not find a Lewis dot structure for Coca Cola as it is a complex mixture of various compounds and not a single pure substance with a defined molecular structure like a simple molecule.