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lorasvet [3.4K]
2 years ago
14

If atoms are made of smaller parts suchas electrons, why are atoms considered thebasic unit of matter?

Chemistry
2 answers:
drek231 [11]2 years ago
6 0

Answer:

Explanation:

The reason for that is because atoms make elements needed for survival(oxygen, hydrogen, nitrogen, carbon, etc.).

Anika [276]2 years ago
6 0

Answer:

As atoms make up elements

Hope this helped :)

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6.34917360^25g

Explanation:

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Answer:

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3 0
3 years ago
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sveta [45]
Answer:

1) Ca: [Ar]4s²
2) Pm: [Xe]6s²4f⁵

Explanation:

1) Ca:

Its atomic number is 20. So it has 20 protons and 20 electrons.

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So, you have two more electrons (20 - 18 = 2) to distribute.

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2) Pm

The atomic number of Pm is 61, so it has 61 protons and 61 electrons.

Pm is in the row (period) 6. So, the noble gas before Pm is Xe.

The atomic number of Xe is 54.

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The resultant distribution for Pm is: [Xe]6s² 4f⁵.
5 0
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