Question

give two examples of such elements which could not fit into gaps left by mendleev​

Answer 1

Answer:

indium, gold, platinum etc. 2) He predicted the properties of some undiscovered elements and left gaps for them e.g. Eka-boron, eka-aluminum and eka-silicon names were given for scandium, gallium, and germanium (not discovered at the time of Mendeleev).

hope it helps

TaNu