Calculate the cell potential for the reaction as written at 25.00 °C , given that [Mg2+]=0.838 M and [Fe2+]=0.0140 M . Use the standard reduction potentials in this table. Mg(s)+Fe2+(aq)↽−−⇀ Mg2+(aq)+Fe(s)

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.