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Reika [66]
3 years ago
8

A group of electrons revolving around a nucleus forms an electron ____

Chemistry
1 answer:
Elanso [62]3 years ago
4 0

Answer:

Electron shell

Explanation:

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What are the first two quantum numbers for the electrons located in subshell 4d?
SCORPION-xisa [38]

Answer:

n = 4, l = 2

Explanation:

The number 4 in 4d is the principal quantum number (n).

The letter d in 4d tells us that we have a d orbital, as determined by the <em>secondary quantum number (l</em>).

The quantum number l tells us the shape of the orbital.

l = 0     s orbital

l = 1      p orbital

l = 2     d orbital

7 0
3 years ago
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If an element has a mass number of 222 and an atomic number of 86, how
svlad2 [7]

Answer:

136

Explanation:

The Mass Number is the combination of the amount of Protons and Neutrons in an element, so if the total mass is 222, and the amount of protons is 86, then you can do 86 + x = 222 to find that x is equal to 136

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3 years ago
Determine whether or not the equation below is balanced. If it isn’t balanced, write the balanced form. Also, identify the react
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Answer:

Explanation:

There's no equation attached. What equation is it?

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3 years ago
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All single-displacement reactions can be classified as another type of reaction as well. What type of reaction is that?
user100 [1]

combustion because one atom in wrong place will make it combust

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3 years ago
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13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂
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Answer:

5H²O= 23

ZnCl²=135

have a great day

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3 years ago
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