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For an element Z = 9. The valency of this element will be
  • a)
    1
  • b)
    2
  • c)
    3
  • d)
    4
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
For an element Z = 9. The valency of this element will bea)1b)2c)3d)4...
Atomic number is 9, which means that electrons are also 9.
Electronic configuration is 2,7. So, the atom will gain 1 electron to complete its octet. Therefore the valency is 1.
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For an element Z = 9. The valency of this element will bea)1b)2c)3d)4Correct answer is option 'A'. Can you explain this answer?
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