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Question: Answered & Verified by Expert
Which of the following statements is not correct?
ChemistryClassification of Elements and Periodicity in PropertiesNEET
Options:
  • A The first ionization energies in (kJ mol-1 ) of carbon, silicon, germanium, tin and lead are 1086, 786, 761, 708 and 715 respectively
  • B Down the group, ionization energy decreases regularly from B to T1 in boron family
  • C Among oxides of the elements of carbon family, CO is neutral, GeO is acidic and SnO is amphoteric
  • D The 4f and 5f-inner transition elements are placed separately at the bottom of the periodic table
Solution:
1878 Upvotes Verified Answer
The correct answer is: Down the group, ionization energy decreases regularly from B to T1 in boron family
In boron family ionization energy decreases abnormally down the group and the order is as follows
B > Tl > Ga > Al > In

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