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– Nelson Mandela

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Periodic Behavior

Periodic Behavior

Q • Question 1 0.5 out of 0.5 points It’s okay to dump chemicals in the drain. • Question 2 0.5 out of 0.5 points All accidents and/or injuries must be reported to the instructor immediately • Question 3 0.5 out of 0.5 points Why do elements in the same vertical column of the periodic table have similar properties to each other? • Question 4 1 out of 1 points Dimitri Mandeleev developed the Periodic Table as we know it. What was his assumption while arranging the elements? Why is this assumption known to be Dimitri's biggest contribution? • Question 5 0.5 out of 0.5 points What is another name for the elements of group IIA of the Periodic table?

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1.Selected Answer: False 2.Selected Answer: True 3.Selected Answer: atoms of the elements in the same group have the same number of valence electrons