An element which can exist in two or more forms in the sa...
An element which can exist in two or more forms in the same physical state, exhibits
isotopy
structural isomerism
allotropy
variable valency
Correct answer is C
No explanation has been provided for this answer.
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The gas present in the stratosphere which filters out some of the sun's ultraviolet light and pr...
Which of the following elements can conveniently be placed in two groups in the periodic table ? ...