How many unpaired electrons are present in the ground state of the atoms in Group 4A(14)? unpaired electrons

4

Explanation:

The particular element is silicon with atomic number of 14

Its electronic configuration is 1s2 2s2 2p6 3s2 3p2.

Looking at it, the outermost p orbital has capacity of 6 electrons but because the outermost electron in the p orbital of this element is 2, therefore the unpaired electrons is 4 (6-2)

the correct answer is 2

Explanation:

i just did this assignment :)

the maximum mass of nh3 is nh3 in grams

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.