d - block and f - block Elements
Compounds of which of the following transition elements do not exhibit an oxidation state of +3?
DoubtBuddy
Single Choice
The element that acts as a good catalyst for several reactions has a atomic number:
A16
B20
C28
Correct Answer
D37
Solution
Transition element with atomic no. 28 (Nickel) acts as very good catalyst.The transition metals and their compounds are known for their catalytic activity. This activity is ascribed to their ability to adopt multiple oxidation states and to form complexes.
SIMILAR QUESTIONS
d - block and f - block Elements
Mercurous ion is represented as:
d - block and f - block Elements
The element that usually does not show variable oxidation states is :
d - block and f - block Elements
Which of the following statements about $$Na_2O_2$$ is not correct?
d - block and f - block Elements
Which one of the following exhibits the largest number of oxidation states?
d - block and f - block Elements
In context with the transition elements, which of the following statements is incorrect?
d - block and f - block Elements
Which one of the following species is stable in aqueous solution
d - block and f - block Elements
Iron exhibits +2 and +3 oxidation states. Which of the following statements about iron is incorrect?
d - block and f - block Elements
The correct statement(s) about $$\displaystyle Cr^{2+}$$ and $$\displaystyle Mn^{3+}$$ is(are): $$\displaystyle \mathrm {\left [ Atomic\ numbers\ of\ Cr = 24\ and\ Mn = 25 \right ]}$$
d - block and f - block Elements
The oxidation number of Mn in the product of alkaline oxidative fusion of $$MnO_{2}$$ is:
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