Single Choice

The basic character of the transition metal monoxides follows the order: (Atomic nos. Ti = 22, V = 23, Cr = 24, Fe = 26)

AVO > CrO > TiO > FeO
BCrO > VO > FeO > TiO
CTiO > FeO > VO > CrO
DTiO > VO > CrO > FeO
Correct Answer

Solution

As we move across the period, the size of the atom gets reduced because of increasing effective nuclear charge. So, it will be less easy for the elements on the rightmost end of the d-block to show electropositive character because of increasing effective nuclear charge the outer shell e$$^-$$s will be more tightly bound to the nucleus. So, the basic character decreases as we move across a period because of a decrease in electropositive character. Hence, the order is: $$TiO> VO>CrO>FeO$$

SIMILAR QUESTIONS

d - block and f - block Elements

Cobalt (60) isotope is used in the treatment of:

d - block and f - block Elements

Identify the incorrect statement.

d - block and f - block Elements

The catalystic activity of transition metals and their compounds is ascribed mainly to:

d - block and f - block Elements

Technetium, the element below manganese in the Periodic Table, would be expected to have high values for its: $$(I)$$ melting point $$(II)$$ boiling point $$(III)$$ density

d - block and f - block Elements

Oxygen is absorbed by molten silver, which is evolved on cooling and the silver particles are scattered. This phenomenon is known as:

d - block and f - block Elements

Transition metals and their compounds catalyses reactions because:

d - block and f - block Elements

Catalytic activity of transition metals depends on:

d - block and f - block Elements

The magnetic moment of a transition metal ion is found to be $$3.87$$ Bohr Magneton (BM). The number of unpaired electrons present in it is:

d - block and f - block Elements

Corrosive sublimate is:

d - block and f - block Elements

Which of the following is arranged in order of increasing melting point ?

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