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  9. Q4
Question 4

What is the atomic number of an element whose cation Y+ has the electronic configuration 1s22s22p6?

  • A.9
  • B.10
  • C.11
  • D.12
Objective

Question details

Exam body
WAEC
Subject
Chemistry
Year
2008
Question no.
#4
Type
Objective
Previous · Q3The valence electrons in a chloride ion are [ 17 CI] Next · Q5 Atom \(^{234} _{88} Q\) decay by alpha emission to give an atom R. The atomic…

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