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IMPORTANT
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How many elements are found in nature?

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Important Questions on Periodic Classification of Elements

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IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 5
The element with atomic number 9, 17, 35, 53 and 85 are all
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IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 6
The neutral particle of an atom is
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Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 7
An atom is electrically neutral because
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Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 8
The third energy level is
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IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 9
The atomic number of an atom with electronic configuration 2,8,1 is
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IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 10
The number of electrons present in the outer most shell of all noble gases(except helium) is
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IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 11
The most active step in the development of the periodic table was taken by
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IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 7 - Periodic Classification of Elements>Target Exercise>Q 12
In the periodic table going down in fluorine group