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Question
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
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Solution
Electronic configuration of element A = (2, 8) at atomic no. 10
∴ Element C having 8 electrons in outer most orbit is chemically inert.
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\[\ce{A^3+ + e- -> A^2+}\]
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|
Atoms |
Mass No |
Atomic No. |
|
A |
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|
B |
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|
C |
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|
D |
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|
E |
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