Which of the following statements are incorrect ? A. All the transition metals except scandium form — NEET Chemistry Past Papers Chemistry Question

Question

Which of the following statements are incorrect ? A. All the transition metals except scandium form MO oxides which are ionic. B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in Sc O to Mn O . C. Basic character increases from V O to V O to V O . D. V O dissolves in acids to give salts. E. CrO is basic but Cr O is amphoteric. Choose the correct answer from the options given below: (A) B and D only (B) C and D only (C) B and C only (D) A and E only + –3 –3 –4 –4 3 3 3 3 2 2 2 2 4 4 4 4 4 3 4 3 2 6 2 2 6 2 6 4– CrO2− 4 MnO− 4 2 4 2+ Cr2O−2 7 2 3 2 7 2 3 2 4 2 5 2 4 V O3− 4 2 3 ALPHA ACHIEVER COURSE_PHASE-1,2 9610WMD802466250009