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There are two lone pair electrons in SiH4. Each hydrogen atom brings one electron, and the silicon atom brings four electrons, forming a total of 12 valence electrons. In the molecule's structure, the two electrons on silicon are not involved in bonding, making them lone pairs.
Nitrogen trifluoride (NF3) has one lone pair of electrons on the nitrogen atom.
nitrogen aton in NH3 has one lone pair of electron
A lone pair- as the name suggests is a pair of electrons which has not yet been shared with any other atom
There are 3 unpaired electrons in an isolated nitrogen atom, the nitrogen molecule has none.
CLO2 (chlorine dioxide) has one lone pair of electrons on the chlorine atom.