The first one. They are not made of elements. They are elements
Answer:
The atomic mass of an element is affected by the distribution of its isotopes because each isotope of an element has a different number of neutrons in the nuclei of its atoms.
Explanation:
please give me brainlyiest if its right
The answer to the question asked above is that amorphous solid's atoms and molecules are not arranged in a definite lattice pattern, while crystalline are arranged definitely in a lattice pattern.
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I think the answer would be c, but double check.
