Problem 27
Refer to the periodic table and select the symbol of the element that fits each of the following descriptions: (a) the third-period alkaline earth metal (b) the halogen that exists as a reddish-brown liquid at normal conditions (c) the rare earth element whose atomic number is greatest (d) the actinide with properties similar to Ce.
Problem 28
Refer to the periodic table and select the symbol of the element that fits each of the following descriptions: (a) the fourth-period representative element with properties similar to \(\mathrm{O}\) (b) the sixth-period transition element with properties similar to \(\mathrm{Ni}\) (c) the rare earth element whose atomic mass is lowest (d) the radioactive noble gas
Problem 29
According to the general trend, metallic character for a period of elements (increases/decreases) proceeding from left to right in the periodic table.
Problem 30
According to the general trend, metallic character (increases/decreases) proceeding up a group of elements in the periodic table.
Problem 31
According to the general trend, the atomic radius for a period of elements (increases/decreases) proceeding from left to right in the periodic table.
Problem 32
According to the general trend, the atomic radius (increases/decreases) proceeding up a group of elements in the periodic table.
Problem 33
According to general trends in the periodic table, predict which element in each of the following pairs has greater metallic character: (a) \(\mathrm{B}\) or \(\mathrm{Al}\) (b) Na or K (c) \(\mathrm{Mg}\) or Ba (d) \(\mathrm{H}\) or \(\mathrm{Fe}\)
Problem 34
According to general trends in the periodic table, predict which element in each of the following pairs has greater metallic character: (a) \(\mathrm{K}\) or \(\mathrm{Ca}\) (b) \(\mathrm{Mg}\) or \(\mathrm{Al}\) (c) Fe or Cu (d) S or Ar
Problem 35
According to general trends in the periodic table, predict which element in each of the following pairs has the larger atomic radius: (a) Li or Na (b) \(\mathrm{N}\) or \(\mathrm{P}\) (c) \(\mathrm{Mg}\) or \(\mathrm{Ca}\) (d) Ar or Kr
Problem 36
According to general trends in the periodic table, predict which element in each of the following pairs has the larger atomic radius: (a) \(\mathrm{Rb}\) or \(\mathrm{Sr}\) (b) As or Se (c) Pb or Bi (d) I or Xe
