Multiple choice

Identify the incorrect statement(s) for boron.

P. Kernite is a mineral of boron. Q. 10B is more abundant isotope than11B. R. Boron has lower second ionization enthalpy than aluminium.

  1. P only

  2. Q only

  3. R only

  4. P and Q

  5. Q and R
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

P. Kernite (Na2B4O7.4H2O) is the mineral of boron. Q. There are two isotopic forms of boron 10B (19%) and 11B (81%). R. Boron (2427 KJ/mol) has higher second Ionization enthalpy than aluminium (1816 KJ/mol).

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