Period 1 contains elements. (two/eight)...

Period 1 contains _________ elements. (two/eight)

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two

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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.)

In the periodic table, the vertical columns are called (periods/group...
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The number of electrons in the outermost shell of the atom of an eleme...
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Period 1 contains elements. (two/eight)
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The elements in a period have valencies. (same/different).
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In the modern periodic table, elements are classified according to the...
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Elements in the same group have chemical properties. (similar/differe...
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As we move across a period from left to right, metallic character (de...
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As we move across a period from left to right, nonmetallic character (...
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The atomic size of lithium is than that of sodium. (greater/smaller).
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Properties of the elements mainly depend on their . (electronic config...
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Fluorine is electronegative than lithium. (more/less)
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Atomic size decreases in a of the periodic table as the atomic number ...
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In a group, the atomic size from top to bottom. (increases / decreases...
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Ionisation energy decreases in a as atomic number increases. (group/p...
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Ionisation energy of sodium is than that of potassium. (more/less)
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If an element of period 2 has one electron in its outermost shell, the...
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The element at the bottom of a group would be expected to show metalli...
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Properties of the elements are a periodic function of their . (atomic...
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The ionisation potential of potassium is that of sodium. (gt//lt)
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Write the correct symbol: gt [greater than] or lt [less than] in the ...
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