A phosphorus atom has one nonbonding pair of electrons.
trigonal pyramidal
The valence electrons are the outermost (highest energy) s and p sublevels. There are 5 valence electrons in a phosphorus atom, and it is in period 3, so its valence electron configuration is 3s23p3.
5
1s22s22p63s23p3
Nonbonding pair (lone pair)
4
The shape of a molecule only describes the arrangement of bonds around a central atom. The arrangement of electron pairs describes how both the bonding and nonbonding electron pair are arranged. For example, in its molecular shape, a water molecule is describes as bent, with two hydrogen atoms bonded to an oxygen atom. However, the arrangement of electron pairs around the oxygen atom is tetrahedral as there are two bonding pairs (shared with the hydrogen) and also two nonbonding pairs.
There is one electron in hydrogen. And since there is only one, it is obviously unpaired.
5
phosphorus have 15 electron because you know the atomic number to know electron
There are exactly three electron pairs attached to the Boron atom, each one of them bonded to a chlorine atom as well.
trigonal pyramidal
1s2,2s2,2p6,3s2,3p3
3 bonding pairs and one lone pair or non-bonding pair
The valence electrons are the outermost (highest energy) s and p sublevels. There are 5 valence electrons in a phosphorus atom, and it is in period 3, so its valence electron configuration is 3s23p3.
The presence of the Oxygen atom with nonbonding electron pairs in the ketone and the aldehyde will allow for Hydrogen bonding to occur, making the compound slightly soluble in water.
1s