There are three lone pairs present in chlorine atom
3 Lone pairs and one unpaired electron
NO2 has one lone pair of electrons.
The electron dot formula for hydrogen chloride (HCl) shows one bond between hydrogen and chlorine with two lone pairs of electrons around chlorine. So, it would be written as H:Cl with two dots around the Cl to represent the lone pairs.
2
In SiCl4, silicon has no lone pairs because it forms four bonds with chlorine atoms, satisfying its octet rule.
When chlorine is bonded to carbon, it typically has three lone pairs of electrons. Chlorine has seven valence electrons, and when it forms a single bond with carbon, it uses one of its electrons for bonding, leaving three lone pairs. Thus, in this scenario, chlorine retains three lone pairs of electrons.
When chlorine is bonded to carbon, it typically has three lone pairs of electrons. Chlorine has seven valence electrons, and when it forms a single bond with carbon, it shares one electron, leaving it with three unshared electrons, which are found in the form of three lone pairs.
CLO2 (chlorine dioxide) has one lone pair of electrons on the chlorine atom.
The Lewis dot structure for HOCl shows oxygen with two lone pairs of electrons, chlorine with three lone pairs of electrons, and hydrogen with one lone pair of electrons. The oxygen is double bonded to the chlorine.
Two lone pair on the central selenium and three lone pairs on each chlorine. So total of eight lone pairs.
In chlorine dioxide (ClO2), the chlorine atom is bonded to two oxygen atoms and has one lone pair of electrons. The total number of unshared (or lone pair) electrons in ClO2 is 2, which come from the lone pair on the chlorine. Additionally, each oxygen atom has two lone pairs, but since the question specifically asks about unshared electrons on chlorine, the answer is 2.
Lone-pair electrons, Bonded pairs of electrons
In $\ce{NiCl2}$, the nickel atom typically exhibits a coordination number of 6. This means that there are no lone pairs of electrons on the nickel atom, since all of its electrons are involved in bonding with the chlorine atoms to form the complex.
In the Lewis structure for methyl chloride (CH₃Cl), chlorine is bonded to carbon and has three lone pairs of electrons. Chlorine, being in Group 17 of the periodic table, has a total of seven valence electrons; it uses one of these to bond with carbon, leaving three lone pairs.
In NCl3, nitrogen has five valence electrons and three of these electrons are used to form covalent bonds with the three chlorine atoms. This leaves nitrogen with two lone pairs of electrons. Lone pairs are non-bonding pairs of electrons that are not involved in chemical bonding but still contribute to the overall electron density around the nitrogen atom.
There are two non-bonding pairs of electrons in Cl4. Each chlorine atom in Cl4 has 7 valence electrons, forming single covalent bonds with the other chlorine atoms, leaving two lone pairs on each chlorine atom.
The Lewis dot structure of chlorine monoxide (ClO) consists of oxygen at the center with a single bond to chlorine. Oxygen has 6 valence electrons and chlorine has 7, making a total of 13 valence electrons in the structure. Oxygen has three lone pairs of electrons and chlorine has one lone pair, satisfying the octet rule for both atoms.