Periodic Table Questions and Answers

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The figure below shows variation of number of outermost electrons (1) with atomic number of elements in the periodic table

asked Jun 22, 2021 in Chemistry Form 2 by anony mous

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Complete combustion of one mole of an alkanol, CxHyOH gave four moles of water. (C= 12.0, H = 1.0, O = 16.0)

asked Jun 22, 2021 in Chemistry Form 3 by anony mous

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Consider the following reaction. H2S+Cl2 →2HCI+S

asked Jun 22, 2021 in Chemistry Form 2 by anony mous

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The table shows the elements in period 3 of the periodic table. Study it and answer the questions that follow.

asked Jun 22, 2021 in Chemistry Form 4 by anonymous

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Study the information in the table and answer the questions that follow. The elements belong to the same chemical family. (The letters are not actual symbols of the elements)

asked Jun 21, 2021 in Chemistry Form 2 by anony mous

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Element A has mass number 40 and 21 neutrons

asked Jun 21, 2021 in Chemistry Form 2 by anony mous

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