Single Choice

Which of the following is not an actinide?

AUranium
BCurium
CCalifornium
DErbium
Correct Answer

Solution

Erbium with atomic number $$68$$, electronic configuration $$[Xe]4f^{12}6s^2$$ belongs to lanthanides.
$$\therefore$$, Erbium is not an actinide.

SIMILAR QUESTIONS

d - block and f - block Elements

The atomic numbers of elements of second inner transition elements lie in the range of :

d - block and f - block Elements

There are 14 elements in actinoid series. Which of the following elements does not belong to this series?

d - block and f - block Elements

Which of the following is not an actinoid?

d - block and f - block Elements

Which of the following is not an actinide?

d - block and f - block Elements

There are 14 elements in actinoid series. Which of the following elements does not belong to this series?

d - block and f - block Elements

Name two elements in each case : Actinides

d - block and f - block Elements

Which belongs to the actinides series?

d - block and f - block Elements

There are $$14$$ elements in actinoid series. Which of the following elements does not belong to this series?

d - block and f - block Elements

General electronic configuration of actinodes is $$ (n-2)f^{1-14} (n-1)d^{0-2} ns^2 $$. Which of the following actinoids have one electrons in $$6d$$ orbitals?

d - block and f - block Elements

There are $$14$$ elements in actinoid series. Which of the following elements does not belong to this series?

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