Which of the following options is used in glass and cement manufacture.
________ is used to strenghten rubber, as a pigment in inks, paints, paper and plastics.
Diamond is not a conductor of electricity because of _________.
It does not have delocalised electrons
The elements of Group 4 show oxidation states of _____
Among the Group 4 elements moving from carbon to silicon the covalent radius increases sharply afterwards the increase is gradual, this is attributed to __________.
Tin is obtained by ___________.
_________ is used for making crucibles, as a lubricant in heavy machines and as pencil lead.
Which of the following statement is correct?
Although diamond occur in nature but it can be obtained artificially by __________.
Group 4 elements form mostly covalent compounds because of _______.