COMEDK2023Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual
Find the correct matches of the substances, given in Column I, from their characteristic properties given in Column II. S.No. Column I S.No. Column II W Tl A Decomposes steam to form its dioxide and dihydrogen gas. X CCl₄ B Consists of twenty 6-membered rings and twelve 5 membered rings. Y Tin C +3 oxidation state is highly oxidising. Z C₆₀ D Electron precise species, neither acts as electron donor nor as electron ac
Options
- AW = C X = D Y = A Z = B
- BW = D X = C Y = B Z = A
- CW = B X = D Y = C Z = A
- DW = D X = C Y = A Z = B
Correct answer
A. W = C X = D Y = A Z = B
Step-by-step solution
Thallium (Tl) belongs to Group 13. Due to the inert pair effect, the +1 oxidation state is more stable than the +3 oxidation state. Consequently, the +3 oxidation state of Tl is highly oxidising, which matches property C. Carbon tetrachloride (CCl₄ ) has a central carbon atom bonded to four chlorine atoms. It has a complete octet and no lone pairs, making it an electron-precise species that acts neither as an electron donor nor as an electron acceptor. This matches property D. Tin (Sn) reacts with steam at high tem