Allotropy refers to the phenomenon where an element can exist in different forms or allotropes with different physical and chemical properties. Elements in Group 15 of the periodic table, also known as the Nitrogen Group, include nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).
Nitrogen exhibits allotropy, with two common allotropes: nitrogen gas (N2) and nitrogen dioxide (NO2). Nitrogen gas is a diatomic molecule with a triple bond between two nitrogen atoms, while nitrogen dioxide is a brown gas with a double bond between a nitrogen atom and an oxygen atom.
Phosphorus also shows allotropy, with several allotropes such as white phosphorus, red phosphorus, and black phosphorus, each having different structures and properties.
Arsenic, antimony, and bismuth, on the other hand, do not exhibit allotropy. These elements exist in a single stable form. Arsenic is a metalloid, antimony is a metalloid, and bismuth is a post-transition metal. These elements do not have different forms with distinct physical and chemical properties like nitrogen and phosphorus.
In summary, all elements of Group 15, except bismuth, show allotropy. Nitrogen and phosphorus have multiple allotropes, while arsenic, antimony, and bismuth exist in a single stable form.
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All elements of Group 15 in the periodic table can exhibit allotropy except for Bismuth (d). Allotropy refers to the phenomenon where an element exists in multiple structural forms in the same physical state. In the case of Group 15 elements:
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(a) Nitrogen can exist as N2, which is a diatomic molecule.
(b) Arsenic can exist in different allotropes with varying structures.
(c) Antimony can also exist in different allotropes.
(d) Bismuth, however, does not exhibit allotropy. It is typically found in its metallic form with a rhombohedral crystal structure and does not have multiple stable structural forms like the other elements in this group.
Answers & Comments
Answer:
(d)Bismuth
Explanation:
Allotropy refers to the phenomenon where an element can exist in different forms or allotropes with different physical and chemical properties. Elements in Group 15 of the periodic table, also known as the Nitrogen Group, include nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).
Nitrogen exhibits allotropy, with two common allotropes: nitrogen gas (N2) and nitrogen dioxide (NO2). Nitrogen gas is a diatomic molecule with a triple bond between two nitrogen atoms, while nitrogen dioxide is a brown gas with a double bond between a nitrogen atom and an oxygen atom.
Phosphorus also shows allotropy, with several allotropes such as white phosphorus, red phosphorus, and black phosphorus, each having different structures and properties.
Arsenic, antimony, and bismuth, on the other hand, do not exhibit allotropy. These elements exist in a single stable form. Arsenic is a metalloid, antimony is a metalloid, and bismuth is a post-transition metal. These elements do not have different forms with distinct physical and chemical properties like nitrogen and phosphorus.
In summary, all elements of Group 15, except bismuth, show allotropy. Nitrogen and phosphorus have multiple allotropes, while arsenic, antimony, and bismuth exist in a single stable form.
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