3 years ago

Which of the following phase changes describes what is

Chemistry

1 answer:

stich3 [128]3 years ago

8 0

Answer:

I think the answer is boiling

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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

3s 3p 3d 3f

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

A solution of pH 3 was mixed with a solution of pH 9. What is the final pH could be ?

chubhunter [2.5K]

The solution of which contains of PH 3 called acidic medium which is more stronger acid called HCl when reacts to the stronger base base NaOH forms the acid base reaction .

According to acid base equation you consider ph5 as PH 9 if you understand it then tell me below

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3 years ago

Which of the following has no electrons? Use a periodic table.

Schach [20]

H- is the one without electron

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4 years ago

1. Which of the following statements about separation techniques is correct?

vagabundo [1.1K]

Answer: A

Explanation:

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4 years ago

What is the name of the event ,which created the universe ?

DanielleElmas [232]

The event that is known to have 'created' the universe was the Big Bang THEORY (because it can't be proven and most people just don't want to admit that there is a God)

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4 years ago