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Pachacha [2.7K]
3 years ago
6

How are isotopes defined?forms of different elements that have the same number of neutrons in each atomforms of different elemen

ts that have the same number of protons in each atomforms of the same element that differ in the number of neutrons in each atomforms of the same element that differ in the number of protons in each atom?
Chemistry
2 answers:
Masja [62]3 years ago
5 0

Your answer is C forms of the same element that differ in the number of neutrons in each atom because if the number of neutrons change the whole element changes.
quester [9]3 years ago
3 0

Answer: Option (c) is the correct answer.

Explanation:

When there are same number of protons but different number of neutrons in the nuclei of two or more forms of an atom then they are known as isotopes.

For example, ^{12}_{6}C and ^{13}_{6}C are isotopes.

Thus, we can conclude that out of the following options, isotopes are defined as forms of the same element that differ in the number of neutrons in each atom.

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A reasonable pka for a weak base is:<br><br> 10.3<br><br> 0.9<br><br> 5.8<br><br> 7.4<br><br> 13.1
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Answer:

0.9

Explanation:

The pka represents the force by which the molecules need to dissociate for the acids ,

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And in case of a base , it will be completely reversed , lower pKa , weaker base ,

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From the data of the question ,

0.9 is the lowest value of the pKa , hence , weakest base .

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