Question 1
Which series of elements shows the smallest difference in atomic radii?
◦ Li......F
◦ Be......Ra
◦ He......Xe
◦ C......Pb
◦ Sc......Zn
Question 2
Which statement best describes relationships in a modern periodic table?
◦ Each transition element is placed in the column of the main group element that it most closely resembles.
◦ The fourteen elements in the "lanthanide" series form a new independent period.
◦ Metalloids usually are the cations in ionic compounds.
◦ Nonmetallic properties tend to predominate for elements at the far right portion of the table.
◦ Elements are always arranged in order of increasing atomic weights.