Science Quiz 129 - Switched on kids

Science Quiz 129

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Upto which element, the Law of Octaves was found applicable?

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Element ‘X’ forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as:

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At the time of Mendeleev, the number of elements known was?

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Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?

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In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?

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An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?

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The arrangement of elements in the Modern Periodic Table is based on their?

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The properties of eka-aluminium predicted by Mendeleev are the same as the properties of later discovered element:

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Science Quiz 129
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