HCl is the chemical formula for hydrogen chloride gas . However, when dissolved in watwer , it is written as 'HCl(aq)' it is then hydrochloric acid.
So HCl is acidic.
Blue/Violet/Indigo . depending on the strength of the alkali.
Water (neutral ) is green
Acids ' Red/Orange/Yellow.
alkali metals have one valence electron, whereas alkaline earth metals have two valence electrons.
All alkaline earth metals loss two electrons.
No. All the alkaline earth metals have 2 valence electrons, meaning they have two electrons in the outermost shells. No two alkaline earth metals have the same number of electron shells. Beryllium is the only one with two shells.
Sr is in group 2. It is an alkaline earth metal.