The "spin-only" magnetic moment [in units of Bohr magneton], $(μB)$ of ${Ni}^{2 +}$ in aqueous solution would be:

(atomic number of $Ni = 28$ )

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Important Questions on The d- and f-Block Elements

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 20 - The d- and f-Block Elements>Exercise-3>Q 31

Identify the incorrect statement among the following

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 20 - The d- and f-Block Elements>Exercise-3>Q 32

The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 20 - The d- and f-Block Elements>Exercise-3>Q 33

Larger number of oxidation states are exhibited by the actinoides than those by the lanthanoides, the main reason being

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 20 - The d- and f-Block Elements>Exercise-3>Q 34

In context with the transition elements, which of the following statements is incorrect?
(1) In the highest oxidation states, the transition metal show basic character and form cationic complexes.
(2) In the highest oxidation states of the first five transition elements (

Sc

to

Mn

), all the

4 s

and

3 d

electrons are used for bonding.
(3) Once the

d^{5}

configuration is exceeded, the tendency to involve all the

3 d

electrons in bonding decreases.
(4) In addition to the normal oxidation states, the zero oxidation state is also shown by these elements in complexes.

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 20 - The d- and f-Block Elements>Exercise-3>Q 35

Knowing that the chemistry of lanthanoids