A student observes two cells under a microscope and lists observations in the table shown. Structure
nucleus
chloroplast
mitochondria
cell wall
Cell A
yes
yes
yes
yes
Cell B.
yes
no
yes
no
Which statement most likely describes the two cells?
O Both Cells A and B are plant cells.
O Both Cells A and B are animal cells.
O Cell A is a plant cell; Cell B is an animal cell.
O Cell A is an animal cell; Cell B is a plant cell.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

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.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.