Periodicity and Periodic Table

This is the energy needed to remove one of the atom’s outermost electrons.

These elements are so reactive that they react violently with air and water. 

Fluorine, chlorine and bromine are elements in the __________ family.

Which element has a smaller ionization energy?    Be  or  C

The lanthanide, and actinide, series are located in the _____ block on the Periodic Table.

This scientist organized the Periodic Table in groups of three elements called Triads.

The f block elements are also known as _________________.

Groups on the Periodic Table are also known as _____________.

Which element has the smallest atomic radius?   chlorine, iodine or bromine

The elements in the halogen family have _____ valence electrons.

Which element has a larger atomic radius?   Ca  or  Sr

This family of elements have very high electronegativities.

_______ are not good conductors of heat and electricity.

Electronegativity generally increases  ________________.

This scientist organized the Periodic Table in order of increasing atomic number.