An element is a main constituent of paper, diamond and clothes etc. it forms covalent bonds with itself and other elements: - (1) identify the element (2) write the electron dot structure of its oxide. (3) draw the electron dot structure of methane and ethene.

Answer 1) Carbon - It is the element which is the main constituent of the paper in the form of cellulose, diamond is made of completely carbon and clothes are mostly made from carbon based fibers. Also, it forms covalent bonds with itself and other elements too because it has 4 valence electrons in its valence shell so, it can either donate or accept electrons to attain a stable octet state.

Answer 2) The electron dot structure of the oxides of carbon are of two types;

i) CO and ii)

The images are attached for the electron dot structures.

Answer 3) The structure of methane and ethene is attached in the image.

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.