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Which electronic configuration correspon...

Which electronic configuration corresponds to an alkali metal?

A

a)2, 2

B

b)`2, 8, 2`

C

c)` 2, 8, 1`

D

d)`2, 8, 8`

Text Solution

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The correct Answer is:
C
` 2, 8, 1`
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ICSE-PERIODIC PROPERTIES OF ELEMENTS -QUESTIONS FOR PRACTICE (Select the correct answer from the given choices (a), (b), (c) and (d).)
  1. Which element has twice as many electrons in its second shell as in th...

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  2. Which one of the following is most reactive? Li Na K Rb

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  3. Which one of the following is most metallic? Na Mg Al Si

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  4. Which one of the following is least reactive element? F Cl Br I

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  5. Which one of the following is most electronegative? F Cl Br I

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  6. Which one of the following is an oxide of an alkali metal?

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  7. Atomic number is the fundamental property of an element'. Write the na...

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  8. What is the atomic number of an element of period 2 and group 17 of th...

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  9. Which of the following pairs of elements are members of the same group...

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  10. Which one of the following has the largest ionisation energy? Ar Cl ...

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  11. Which one of the following is an alkali metal?

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  12. Which one of the following is a member of halogen family?

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  13. The total number of elements in period 3 of the periodic table is:

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  14. Which electronic configuration corresponds to a noble gas?

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  15. Which electronic configuration corresponds to an alkali metal?

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  16. Which electronic configuration corresponds to a halogen?

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  17. Which one is an oxide of group 2 metal?

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  18. Among the elements given below the element with highest electronegativ...

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  19. Ionisation potential increases in a period from left to right because

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  20. If an element A belongs to period 3 and group 2, then it will have

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