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Question
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
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Solution
Electronic configuration of element A = (2, 8, 8, 1) at atomic no. 19
∴ Element B having 1 electron in outermost orbit is a Metal.
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|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
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|
|
|
|
Cl |
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|
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|
|
|
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|
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|
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|
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|
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