The 14 elements have been placed in VI period and II group of periodic table. These are called
A. Alkali Metals
B. Alkaline Earth Metals
C. Rare Earth Metals
D. Inert Gases
Answers
Answer:
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).[1] The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.[2]
Structurally, they (together with helium) have in common an outer s-orbital which is full;[2][3][4] that is, this orbital contains its full complement of two electrons, which the alkaline earth metals readily lose to form cations with charge +2, and an oxidation state of +2.[5]
All the discovered alkaline earth metals occur in nature, although radium occurs only through the decay chain of uranium and thorium and not as a primordial element.[6] There have been experiments, all unsuccessful, to try to synthesize element 120, the next potential member of the group.