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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 |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
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