Answer:
option B= 6 : 4
Explanation:
Properties:
1. Carbon have six electron and six proton.
2. The two electrons are present in first shell while remaining of four electrons are present in the second shell.
3. it is non-metallic element and present in the group fourteen of periodic table.
4. its atomic mass is 12.0107 u.
5. its melting and boiling point is 3550 °C and 4827 °C respectively.
Uses:
1. it is used as a fuel in the form of coal.
2. in the form of graphite it is used in dry cells, as a lubricant, in pencil and high temperature crucible.
3. it is also used in jewelry in the form of diamond and because of its hard nature used in industries for drilling, polishing, cutting and grinding.
4. carbon black powder is used in printer ink.
5. its most common alloy with iron is steel.
6. it form variety of compound with number of other elements like nitrogen, hydrogen, oxygen etc.
Electronic configuration:
1s2, 2s2, 2p2
Isotopes of carbon:
There are fifteen isotopes of carbon from C8 - C22. The isotopes C12 and C13 are stable while C14 is radioactive.
, we can simplify the fraction to 