| 1. | The property of an element in the periodic table depends on its, _______ ? | |
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electronic configuration
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number of protons
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atomic mass
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atomic size
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Report Question| 2. | Where would you locate the element with electronic configuration 2, 8 in the modern periodic table ? | |
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Group 18
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Group 10
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Group 2
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Group 8
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| 3. | The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. to which of the following categories does the element belong ? | |
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Metalloid
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Left-hand side element
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Metal
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Non-metal
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| 4. | An element has 12 protons. The group and period to which this element belongs to is ? | |
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3rd group, 3rd period
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3rd group, 2nd period
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2nd group, 3rd period
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2nd group, 2nd period
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| 5. | 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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Na
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Al
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Si
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Mg
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| 6. | The metal which is hard and has high melting point and used in filaments of electrical bulbs is ? | |
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Fe
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W
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Pt
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Ni
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| 7. | What is the basis of the modern periodic table ? | |
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Atomic number
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Metallic and Non-metallic character
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Atomic size
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Atomic mass
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| 8. | An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong ? | |
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3rd group
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2nd group
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6th group
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4th group
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| 9. | Newlands relation is called ? | |
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Atomic Mass Law
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Periodic Law
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Musical Law
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Law of Octaves
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| 10. | Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If atomic number of carbon is 6, the atomic number of silicon is ? | |
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16
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7
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14
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24
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