The ratio of mass percent of C and H of an organic compound (C_XH_YO_Z) is 6 : 1. If one molecule of the above compound (C_XH_YO_Z) contains half as much oxygen as required to burn one molecule of compound C_XH_Y completely to CO₂ and H₂O. The empirical formula of compound C_XH_YO_Z is

Total number of lone pair of electrons in $${\rm I}_3^ - $$ ion is

Which type of ‘defect’ has the presence of cations in the interstitial sites?

According to molecular orbital theory, which of the following will not be a viable molecule?