Hydrides as well as halides of alkaline earth metals tend to polymerize a] Strontium b] Calcium c] Beryllium d] Magnesium

Identify the correct formula of halides of alkaline earth metals from the following.

Which of alkaline earth metal halides given below is essentially covalent in nature?

The covalent alkaline earth metal halide ( X = Cl, Br, I ) is :

The covalent alkaline earth metal halide ( X = Cl, Br, I ) is :

What type of lattices are formed by alkali metal and alkaline earth metal hydrides

(a) Why alkaline earth metals are harder, have higer melting ponts and higher densities than the alkali metals? (b). Why the atoms of alkaline earth metals are smaller than the corresponding alkali metals? (c ). Why alkaline earth metals have high electrical and thermal conductivities? (d). What is black ash? (e). Why the variation in physical properties of alkaline earth elements is not as regular as in the case of alkali metals?

What is the trend of formation of hydrated halides among alkaline earth metals?

State the valencies of the following metallic elements -a] Potassium b] Sodium c] Calcium d] Magnesium e] Zinc f] Aluminium g] Chromium [write each symbol with the valency]

(a)Name the first three alkaline earth metals. (b) Write their reactions with dil hydrochloric acid.

Dihydrogen form three types of hydrides. (i)___ hydrides are formed by alkali metals and alkaline earth metals. (ii)___ hydrides are formed by non-metals and (iii)___ hydrides are formed by d abd f-block elements at elevated temperature. Complex metal hydrides such as (iv)___ and (v)___ are powerful reducing agents.