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Periodic Classi...

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  • Question 1
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    14 elements after actinium is called

  • Question 2
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    An element has an atomic number of 15 with which of the following elements will it show similar chemical properties.

  • Question 3
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    The group number and period number respectively of an element with atomic number 8 is.

  • Question 4
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    An element belongs to period 2 and group 2 th number of valence electrons in the atoms of this element is.

  • Question 5
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    In the third period of the periodic table the element having smallest size is

  • Question 6
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    Electronic configuration of Al+3 is

  • Question 7
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    Identify the group which is not a Dobereiner triad

  • Question 8
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    Which is not true about the noble gases?

  • Question 9
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    Identify the wrong sequence of the elements in a group

  • Question 10
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    An element with atomic number will form a basic oxide________

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