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Chemistry Past Questions

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3896

How many electrons does  \({31}_{15}\)P\(^3-\) contain?

  • A. 12
  • B. 15
  • C. 16
  • D. 18
View Answer & Discuss (1) WAEC 2020
3897

The atomic number of an atom would be equal to its mass number if it

  • A. has a totally filled valence shell
  • B. has a high charge to mass ratio
  • C. does not contain neutrons
  • D. exhibits isotopy
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3898

Which of the following processes is not exhibited by atoms in order to attain more stable electron configuration?

  • A. Gaining of electrons
  • B. Hybridization of orbitals
  • C. Losing electrons
  • D. Sharing electron
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3899

which of the following quantities is a molar quantity?

  • A. Molarity
  • B. Molar mass
  • C. Mass concentration
  • D. Molality
View Answer & Discuss (8) WAEC 2020
3900

Dilution factor is the?

  • A. amount of distilled water that is added to the concentrated solution to dilute it
  • B. Quantity of distilled water added to l dm\(^3\) of the concentrated solution to give the dilute solution
  • C. number of times the volume of the concentrated solution is diluted to give the dilute solution
  • D. act of diluting the concentrated solution to obtain the dilute solution
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