Alkaline earth metals . have the smallest atomic radius in a given period form monoanions form basic oxides exist as triatomic molecules form halides with the formula MX

Alkaline earth metals form basic oxides.

Explanation:

Elements of group 2 are also known as alkaline earth metals. For example, Be, Mg, Ca, Sr, Ba and Ra are all group 2 elements.

Being placed on the left side of periodic table, alkaline earth metals have large atomic radius but their radius is smaller than alkali metals (group 1).

When oxygen combines with a metal then it results in the formation of a basic oxide.

For example, MgO is a basic oxide of group 2 element.

Thus, we can conclude that alkaline earth metals form basic oxides.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.