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The electronic configuration of the atom of an element X is 2,8,4. In the modern periodic table, the element X is placed in:

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Important Questions on Periodic Classification Of Elements

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10th CBSE
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 39
The atomic number of an element is 20. In the modern periodic table, this element is placed in
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10th CBSE
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 40
Five elements A, B, C, D and E have atomic numbers of 2,3,7,10 and 18 respectively. The elements which belong to the same period of the periodic table are:
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 42
Which of the following element would lose an electron easily?
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10th CBSE
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 43
Which of the following element does not lose an electron easily?
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10th CBSE
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 44
Where would you locate the element with the electronic configuration 2,8 in the modern periodic table?
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10th CBSE
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 45
An element which is an essential constituent of all organic compounds belongs to the following group of the modern periodic table:
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 46
Which of the following is the valence shell for the elements of second period of the modern periodic table?
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Science for Tenth Class Part - 2 Chemistry>Chapter 5 - Periodic Classification Of Elements>Multiple Choice Questions (MCQs)>Q 47
The element which has the maximum number of valence electrons is