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Allotropes and Oxidation States of Carbon

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Allotropes and Oxidation States of Carbon

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Questions and Answers

Which of the following statements about the oxidation states of p-block elements is correct?

The oxidation state two units greater than the group oxidation state is more stable for all elements in a group.

The group oxidation state is always the most stable for all elements in a group.

For heavier elements in a group, the oxidation state two units less than the group oxidation state is more stable. (correct)

For lighter elements in a group, the group oxidation state is the most stable.

What is the reason attributed to the occurrence of oxidation states two units less than the group oxidation state?

The presence of d-orbitals in the valence shell

The inert pair effect (correct)

The high electronegativity of the elements

The small atomic radii of the elements

Which of the following factors contributes to the interesting chemistry of p-block elements?

The influence of d and f electrons in the inner core of the lighter elements

The presence of only s and p electrons in the valence shell

The influence of d and f electrons in the inner core of the heavier elements (correct)

The absence of d and f electrons in the inner core of all elements

Which of the following properties of p-block elements is influenced by the presence of d and f electrons in the inner core of the heavier elements?

Variation in atomic radii Signup and view all the answers

Which of the following elements is known for its ability to form covalent bonds and form allotropic forms?

Carbon Signup and view all the answers

Which of the following statements about the chemistry of boron is correct?

Boron forms covalent bonds and exhibits anomalous behavior. Signup and view all the answers

Which of the following elements is known for its ability to form $\pi$ bonds?

Carbon Signup and view all the answers

Which of the following statements about the atomic radii of group elements is correct?

The atomic radii of group elements increase down the group. Signup and view all the answers

Which of the following elements is known for its ability to form covalent bonds and exhibit anomalous behavior?

Boron Signup and view all the answers

Which of the following statements about the chemistry of silicon is correct?

Silicon forms covalent bonds, and its chemistry is discussed. Signup and view all the answers