Multiple choice

Which of the following statements are FALSE regarding group 15 elements?

  1. The first ionization energies of the group 15 elements are higher than the corresponding members of the group 14 elements.
  2. The electronegativity values of elements of group 15 are lower than the corresponding elements of group 14.
  3. All elements of group 15 show allotropy.

  1. Only 1

  2. 1 and 2

  3. 1 and 3

  4. 2 and 3

  5. All are correct statements
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The electronegativity values of elements of group 15 are higher than the corresponding elements of group 14 because they have smaller size and greater nuclear charge of atoms. Except nitrogen and bismuth, all other elements of group 15 show allotropy. For example,  Phosphorus exists as white, black or red phosphorus.  Arsenic exists as yellow or grey arsenic.  Antimony exists as yellow or silvery grey antimony.

Keep practicing — related questions