Answered

Some elements can have multiple molecular forms in the same physical state. these multiple forms are called

Aisotopes.
Bisotropes.
Callotropes.
Dmulti-tropes.

Verified Answer :

JoshEast

These are known as allotropes (option c).  A well known example is in the case of Carbon which has diamond, soot, graphite and buckminsterfullerene as solid allotropes.

IthaloAbreu

Answer:

c) Allotropes

Explanation:

Isotopes are different forms of the atomic structure of the same chemical element. Isotopes will have the same atomic number, but a different mass number. It occurs because they have a different number of neutrons. The mass of an element is the number of protons plus the number of neutrons.

For example, hydrogen can have a mass equal to 1, 2, or 3, and they are isotopes of hydrogen, called Protium, Deuterium, and Tritium, respectively.

Isotropes and multi-tropes don't exist.

Allotropes are molecules formed by the same element, but with different conformation in the same physical state. They will have different physic properties. The carbon, for example, has the allotropes: diamond, graphite, and fullerene.

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