Posted: August 17th, 2017

Which one of the following statements concerning elements in the Periodic Table is correct?

Which one of the following statements concerning elements in the Periodic Table is
correct?
A Elements of the same group all have the same number of electrons in the
outermost occupied electron shell.
B Elements of Group 16 occur as cations in ionic compounds.
C Oxides of elements in Groups 16 and 17 are basic.
D The halogens (Group 17) are all gases at room temperature.
E The Group 13 elements are all metals.