Which of the reactions will need the maximum amount of energy?
READ MORE +Periodic Table MCQs
The correct order for the size of I, I+, I– is
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Find the successive elements of the periodic table with ionisation energies, 2372, 520 and 890 kJ per mol respectively
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For the same value of n, the penetration power of orbital follows the order
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Which one will have the highest 2nd ionisation energy?
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Which of the following elements has 2 shells and both are completely filled?
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An element X belongs to the 3rd period and 1st group of the periodic table. What is the number of valence electrons in its atom?
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Which of the following does not decrease while moving down the group of the periodic table?
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The elements A, B and C belong to group 2, 14 and 16 respectively, of the periodic table. Which of the two elements will form covalent bonds?
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How many periods and groups are present in the periodic table?
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Which of the following is the atomic number of an element that forms basic oxide?
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Which of the following is the most reactive element of the group 17?
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