Which of the following elements are included in the actinoid series?
- A$Th$ to $Lr$
- B$Ac$ to $Lr$
- C$Ac$ to $No$
- D$Ce$ to $Yb$
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The highest oxidation state in plutonium (At. No. = $94$) is
Determine the correct $(T)$ and incorrect $(F)$ statements from the following:
$(a)$ The symbol for Lanthanum is $La$.
$(b)$ The name of the element $Lu$ is Lanthanum.
$(c)$ The electronic configuration of $La^{3+}$ and $Ce^{4+}$ contains $4f^0$.
$(a)$ The symbol for Lanthanum is $La$.
$(b)$ The name of the element $Lu$ is Lanthanum.
$(c)$ The electronic configuration of $La^{3+}$ and $Ce^{4+}$ contains $4f^0$.
Difficult
View SolutionAssertion : Magnetic moment of $Dy^{3+}$ is highest among lanthanoids.
Reason : Orbital motion contributes to the magnetic moment.
Reason : Orbital motion contributes to the magnetic moment.
Which of the following is not an actinide?
Easy
View SolutionThe elements with atomic numbers $101$ and $104$ belong to,respectively
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