Single Choice

What is the general molecular formula of the products obtained on heating lanthanoids (Ln) with sulphur?

A$$LnS$$
B$$LnS_3$$
C$$Ln_3S_2$$
D$$Ln_2S_3$$
Correct Answer

Solution

Heating lanthanides with sulphur form corresponding sulphides:

$$2Ln+3S\longrightarrow { Ln }_{ 2 }{ S }_{ 3 }$$

Hence, option $$D$$ is correct.

SIMILAR QUESTIONS

d - block and f - block Elements

Which of the following Lanthanoid is radioactive?

d - block and f - block Elements

The only radioactive element among the lanthanoids is

d - block and f - block Elements

Which of the following lanthanide is commonly used?

d - block and f - block Elements

Knowing that the Chemistry of lanthanoids $$(\mathrm{L}\mathrm{n})$$ is dominated by its $$+3$$ oxidation state, which of the following statements is incorrect?

d - block and f - block Elements

In context of the lanthanoids, which of the following statements is not correct?

d - block and f - block Elements

Only lanthanide which is radioactive is:

d - block and f - block Elements

Choose the incorrect statement among the following:

d - block and f - block Elements

Although $$+3$$ is the characteristic oxidization state for lanthanoids but cerium also shows $$+4$$ oxidation state because?

d - block and f - block Elements

Although $$+3$$ is the characteristic oxidization state for lanthanoids but cerium also shows $$+4$$ oxidation state because?

d - block and f - block Elements

Consider the following statements in respect of lanthanoids : (i) the basic strength of hydroxides of lanthanoids increases from $$ La(OH)_3\ to\ Lu(OH)_3 $$ (ii) The lanthanoid ions $$ Lu^{3+}, Yb^{2+} and \ Ce^{4+} $$ are diamagnetic . Which of the statement (s) given above is/are correct?

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