The only radioactive element among the lanthanoids is

Name the radioactive element in Lanthanoids

Name the radioactive element among noble gas.

Which of the following is radioactive element among the 4-f series ?

Why are there only 14 elements in the lanthanoid series?

STATEMENT-1: U can show oxidation state +6 STATEMENT-2: Uranium is a radioactive element STATEMENT-3: Uranium is lanthanoid

STATEMENT-1: U can show oxidation state +6 STATEMENT-2: Uranium is a radioactive element STATEMENT-3: Uranium is lanthanoid

Why are there fourteen elements in the lanthanoid series?