Name the elements that determine the weather of a place.

Define the weather.

Name the elements present in coal.

Name the elements present in coal.

The elements named after the name of the planets are :

The elements named after the name of the planets are

Which elements is named after the name of a planet is

Define weathering

Mendeleev's predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium. Name the elements which have taken the place of these elements.