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An element has atomic number 3. To which...

An element has atomic number 3. To which period of the periodic table does it belong?

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Second period.
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OSWAAL PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-TOPIC:2- VERY SHORT ANSWER TYPE QUESTIONS
  1. An element has atomic number 3. To which period of the periodic table ...

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  2. Name any two elements that have two electrons in their valence shell.

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  3. State three reasons for placing chlorine and bromine in the same group...

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  4. Give the number of elements in 2^(nd)and5^(th) period in Modern Period...

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  5. Write the atomic numbers of two elements 'X' and 'Y' having electronic...

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  6. The atomic numbers of three elements A, B and C are 12, 18 and 20 resp...

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  7. Write any one difference between the electronic configuration of group...

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  8. There are 7 electrons in the outermost 'L' shell of an element. Predic...

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  9. The electronic configuration of two elements X and Y are 2,8,7 and 2,8...

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  10. The atomic number of three element X, Y and Z are 3, 11 and 17 respect...

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  11. Name two elements of first period in modern periodic table.

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  12. On which side of the periodic table do you find (i) metals, (ii) non-m...

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  13. What is the similarity in the valency of all the elements of group 1 i...

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  14. How does the electronegativity changes as we move from left to right a...

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  15. How does metallic character of a metal depend on the size of atom?

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  16. State the similarity in the electronic configuration of all the elemen...

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  17. List any two properties of the elements belonging to the first group m...

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  18. The atomic number of three element X, Y and Z are 3, 11 and 17 respect...

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