Question 1
In a surprisingly large number of their properties, beryllium resembles aluminum and boron resembles silicon. Such a relationship is called
◦ amphoterism.
◦ an allotropic relationship.
◦ a diagonal relationship.
◦ the periodic law.
◦ an isoelectronic series.
Question 2
In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s
24d
105p
2?
◦ row 4, group 4A
◦ row 4, group 5A
◦ row 5, group 4A
◦ row 5, group 5A
◦ none of the above