| 1. | Which of the following statements about the modern periodic table is correct ? | |
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It has 7 horizontal rows known as Groups.
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It has 7 vertical columns known as Periods.
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It has 18 horizontal rows known as Periods.
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It has 18 vertical columns known as Groups.
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Report Question| 2. | The statement that is not true about electron affinity is ? | |
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It involves formation of an anion
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It is expressed in electron volts
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It causes energy to be absorbed
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It causes energy to be released
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| 3. | The non-metallic element present in the third period other than sulphur and chlorine is ? | |
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phosphorus
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fluorine
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oxygen
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nitrogen
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| 4. | The family of elements to which calcium belongs is __________ ? | |
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noble gases
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halogens
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alkali metals
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alkaline earth metals
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| 5. | Which of the following elements will form an acidic oxide ? | |
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An element with atomic number 19
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An element with atomic number 12
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An element with atomic number 7
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An element with atomic number 3
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| 6. | The elements of group 16 are called ? | |
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Noble gases
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Pnicogens
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Chalcogens
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Halogens
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| 7. | An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound. ? | |
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(XY)2
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X2Y
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XY2
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XY
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| 8. | The arrangement of elements in the Modem Periodic Table is based on their ? | |
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increasing atomic mass in the group
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increasing atomic number in the vertical columns
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increasing atomic mass in the period
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increasing atomic number in the horizontal rows
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| 9. | An element has configuration 2, 8, 1. It belongs to, _________ ? | |
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17 group and 3rd period
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1 group and 8th period
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1 group and 3rd period
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3 group and 1st period
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| 10. | Lanthanides and actinides are also called ___________ ? | |
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noble gases
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transition elements
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inner transition elements
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normal elements
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