WBCS.LIVE practice question

Mendeleev’s left the gap under aluminium and a gap under silicon having atomic weights 68 and 72 respectively. These elements respectively are

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Eka-aluminium and Eka-silicon
  2. aluminium and silicon
  3. Eka-germanium and Eka-silicon
  4. Eka-aluminium and Eka-germanium

Correct answer and explanation

Correct answer: Eka-aluminium and Eka-silicon