Q.1
The reason that salt crystallines, such as KCl, are held together so well is because the cations are strongly attracted to:
  • neighboring cations
  • protons in the nucleus of the bonding atom
  • delocalized electrons
  • neighboring anions
Q.2
The octet rule means that all valence shells want to have the number......
  • 1
  • 9
  • 8
  • 16
Q.3
The most electronegative atom in the periodic table is:
  • Fluorine
  • Helium
  • Neon
  • Francium
Q.4
Which of the following combinations could be described by the "sea of electrons" model?
  • gold-silver alloy
  • gold chloride
  • Cl2
  • NaCl
Q.5
The correct decreasing order of the boiling points of Hand NH3 is:
  • H2O > NH3
  • NH3 > H2O
Q.6
The chemical formula of iron (III)bromide is
  • FeBr
  • Fe(III)Br
  • FeBr₃
  • Fe₂Br₃
Q.7
The ability of an atom in a molecule to attract electrons is best quantified by the ______.
  • electronegativity
  • paramagnetism
  • diamagnetism
  • first ionization energy
0 h : 0 m : 1 s