Alkaline earth metals have low ionization energy so the are……..reactive.
a) very
b) moderate
c) less
d) none
Due to high reactivity and low ionization energy, alkaline earth metals are not found in
a) water
b) free state
c) combined state
d) nature
Which of the following occur in small amount in the form of beryl?
a) beryllium
b) barium
c) magnesium and calcium
d) boron
Which of the following occur abundantly in earth crust?
a) beryllium
b) barium
c) magnesium and calcium
d) radium
Magnesium and calcium are found with ……… in the rocks as cations.
a) sodium
b) potassium
c) lithium
d) both a and b
Magnesium halides are found in………
a) earth crust
b) fresh water
c) sea water
d) decomposed matter
