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Chemistry · Classification of Elements and Periodicity in Properties

हिन्दी

According to Mendeleev's predictions for Eka-aluminium and Gallium, what was the experimentally found density of Gallium (in \( \mathrm{g/cm^3} \))?

  1. 5.9
  2. 5.5
  3. 72.6
  4. 5.94

Correct answer · Option 4

5.94

Explanation

Table 3.3 shows that the predicted density of Eka-aluminium was \( 5.9 \) while the experimentally found density of Gallium is \( 5.94 \mathrm{\,g/cm^3} \).
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