WorksheetsPeriodic Trends (Atomic Radius) CFU
Total questions: 8
Worksheet time: 6mins
Which of these best explains the reasoning behind the trend that as you go across a period, size decreases?
As you go across a period, more energy levels are added, which shrinks the atom.
The added electrons in the nucleus give the atom a negative charge, which shrinks the atom.
The added protons in the nucleus pull the electrons closer to them, which shrinks the atom.
All of the above
Which atom in the list below has the largest atomic radius?
Argon (Ar)
Helium (He)
Krypton (Kr)
Radon (Rn)
Arrange the elements lead, tin, carbon, and silicon in order of increasing atomic radius.
Pb < Sn < C < Si
Pb < Sn < Si < C
C < Si < Sn < Pb
C < Sn < Si < Pb
Which of the following is true of atomic radius?
The radius is mainly due to how large an atom's nucleus is.
The radius is mainly due to the size of the electron cloud.
The atomic radius is a way we measure the mass of an atom.
Neutrons account for the majority of an atom's radius.
