1- The element normally exhibits six allotropes and four oxidation states.
2- The amorphous allotrope is a brown powder.
3- The allotrope is: " graphene".
4- Different crystalline forms of an element are called allotropes .
5- The two most common allotropes are white phosphorus and red phosphorus.
6- Other selenium allotropes may contain Se6 or Se7 rings.
7- Silicon has two known allotropes that exist at room temperature.
8- Diamond is one well known allotrope of carbon.
9- About one-half of all elements are allotropes .
10- The crystalline allotrope is gray and has a metallic luster.
11- This multiplicity of allotropes is common among the actinides.
12- Selenium has at least five known allotropes .
13- Carbon is capable of forming many allotropes due to its valency.
14- Neptunium is found in at least three allotropes .
15- The four other allotropes of selenium are metastable.
16- Other notable sulfur allotropes include rhombic sulfur and monoclinic sulfur.
17- The yellow allotrope of antimony is the most unstable.
18- However, the alpha allotrope is diamagnetic.
19- These allotropes are known as the amorphous and the crystalline allotropes.
20- These allotropes are known as the amorphous and the crystalline allotropes .
21- Polonium is a radioactive element that exists in two metallic allotropes .
22- A third allotrope , black phosphorus, is only formed under high pressures.
23- Rhombic sulfur is the more stable of the two allotropes .
24- The different forms are called allotropes .
25- The high-temperature gamma allotrope has a body-centered cubic crystalline structure.
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