2 years ago

Is air an element? Explain your answer Pls

Chemistry

2 answers:

charle [14.2K]2 years ago

4 0

Answer:

No.

Explanation:

Air is not an element because it is not pure and it cannot be found on the periodic table. Oxygen is a compound molecule.

Vinil7 [7]2 years ago

3 0

Answer:sNo, Air is not an element It's a mixture of a variety of gases.

Explanation:

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3 years ago

Which types of electron orbitals will have higher energy than a 4d orbital?

alexdok [17]

Answer:

D) 4f

Explanation:

To determine which electron orbital that will have higher energy than a 4d orbital, we write the electron configuration starting with s-orbital.

2s 2p

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4s 4p 4d 4f

5s 5p 5d 5f

6s 6p 6d 6f

7s 7p 7d 7f

In ascending order, 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 3f, <u>4d</u><em>,</em> 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 6f, 7d, 7f.

From the electronic configuration formula above, the electron orbitals that have higher energy than a 4d orbital are 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 6f, 7d, 7f.

Therefore, 4f is the correct answer.

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3 years ago

The formula for the table salt is NaCl. Is table salt ionic or covalent? Explain.

mel-nik [20]

Answer:

ionic

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Explanation:

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