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If an element of period 2 has one electr...

If an element of period 2 has one electron in its outermost shell, then it is likely to be a __________. (metal/nonmetal)

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ICSE-PERIODIC PROPERTIES OF ELEMENTS -QUESTIONS FOR PRACTICE ( Fill in the blanks by using correct word/term given in the brackets and rewrite the complete sentence in your notebook.)
  1. Period 1 contains elements. (two/eight)

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  2. The elements in a period have valencies. (same/different).

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  3. In the modern periodic table, elements are classified according to the...

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  4. Elements in the same group have chemical properties. (similar/differe...

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  5. As we move across a period from left to right, metallic character (de...

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  6. As we move across a period from left to right, nonmetallic character (...

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  7. The atomic size of lithium is than that of sodium. (greater/smaller).

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  8. Properties of the elements mainly depend on their . (electronic config...

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  9. Fluorine is electronegative than lithium. (more/less)

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  10. Atomic size decreases in a of the periodic table as the atomic number ...

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  11. In a group, the atomic size from top to bottom. (increases / decreases...

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  12. Ionisation energy decreases in a as atomic number increases. (group/p...

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  13. Ionisation energy of sodium is than that of potassium. (more/less)

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  14. If an element of period 2 has one electron in its outermost shell, the...

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  15. The element at the bottom of a group would be expected to show metalli...

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  16. Properties of the elements are a periodic function of their . (atomic...

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  17. The ionisation potential of potassium is ​that of sodium. (gt//lt)

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  18. Write the correct symbol: gt [greater than] or lt [less than] in the ...

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  19. If an element has a low ionisation energy, then it is likely to be . (...

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  20. If an element has seven electrons in its outermost shell then it is li...

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