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Greeley [361]
3 years ago
9

What is one characteristic of a sample of matter that indicates it is a pure substance?

Chemistry
2 answers:
victus00 [196]3 years ago
8 0

Answer:d

Explanation:

Alexeev081 [22]3 years ago
6 0

Answer:

D

Explanation:

If the composition of a sample is fixed, the sample is a pure substance. According to the law of definite proportions (constant composition), components of a pure substance must be in definite ratios regardless of the source.

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Answer:


                  Option-1 (O²⁻) is the correct answer.


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As we know all given compounds belongs to same group (Group 6) in periodic table. And from top to bottom along the group the elements are placed as,


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Hence, moving from top to bottom along the group the number of shells increases. And with increase in number of shell the atomic or ionic radii increases. As Oxygen is present at the top of the group, therefore, it has the smallest radius due to less number of shells.

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