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Chemistry · Classification of Elements and Periodicity in Properties

हिन्दी

Mendeleev left several gaps in his periodic table for undiscovered elements. The elements predicted below aluminum and silicon were respectively designated as:

  1. Eka-boron and Eka-aluminium
  2. Eka-aluminium and Eka-silicon
  3. Eka-silicon and Eka-manganese
  4. Eka-aluminium and Eka-zinc

Correct answer · Option 2

Eka-aluminium and Eka-silicon

Explanation

Mendeleev predicted the properties of undiscovered elements below aluminum and silicon, naming them Eka-aluminium (gallium) and Eka-silicon (germanium) respectively.
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