Give the complete ground state electronic configuration for the two elements having atomic numbers 8 and 16.

Nitrogen has two relatively stable isotopes: ¹⁴N and ¹⁵N. Determine the number of protons and neutrons in each isotope. (Recall: nitrogen has an atomic number of 7.)

There are three stable isotopes of oxygen having mass ­numbers 16, 17 and 18. Determine the number of neutrons and protons in each of these.

Select the smaller atom between S and Cl.

Determine the number of electrons rubidium must lose to obtain a noble gas configuration and identify the noble gas that corresponds to the configuration.

How many electrons must bromine lose or gain to obtain a noble gas configuration? Give the identity of the noble gas that corresponds to the configuration.