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Question
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What is the formula of the compound formed between X and Z.
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Solution
XZ is the formula of the compound formed between X and Z.
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|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
6 |
|
|
|
|
Cl |
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|
20 |
|
|
|
Na |
|
|
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|
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|
Al |
|
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|
|
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|
S |
|
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|
|
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Zn → Zn2+ + 2e-
Five atoms are labelled V to Z
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| V | 40 | 20 |
| W | 19 | 9 |
| X | 7 | 3 |
| Y | 16 | 8 |
| Z | 14 | 7 |
- Which one of these atoms
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