Question

Name some elements whose properties were predicted by Mendeleev prior to their discovery.

Answer 1

• Mendeleev's periodic law states that - The properties of the elements are a periodic function of their atomic weights.
• Mendeleev's periodic chart had gaps for elements like gallium (Ga), scandium (Sc), and germanium (Ge) that had not yet been found (Ge).
• When these elements were identified later, they were inserted in the spaces between the existing elements without upsetting them.