Name one most mobile element and one most immobile element.

Name the most poisonous element.

Name the most poisonous element.

An immobile element in plants is

An immobile element in plants is

Name two immobile elements found in plants.

The immobile element in plants is

The immobile element in plants is

Which is the most electronegative element and the most electropositive element in the modern periodic table ?

Name two elements that are immobile in plants.