Question

exam 2: periodicity & electron configuration/em spectrum
the periods and groups on the periodic table are numbered.
for example, the element neon is in the group 18
which of the following elements is likely to have properties that are similar to those of neon?
o iron (fe), group 8
o boron (b), group 13
o lithium (li), group 1
o krypton (kr), group 18

Explanation:

Elements in the same group of the periodic table have similar chemical properties. Neon is in group 18. Krypton is also in group 18, so it is likely to have properties similar to neon.

Answer:

D. krypton (Kr), group 18