Match List-I with List-II.
List - I | List - II | ||
(a) | Li | (i) | Absorbent for carbon dioxide |
(b) | Na | (ii) | Electrochemical cells |
(c) | KOH | (iii) | Coolant in fast breeder reactors |
(d) | Cs | (iv) | Photoelectric cell |
Choose the correct answer from the options given below:
Which of the following has the highest hydration energy?
Group one of alkali metals is s-block elements with just one electron in their s-orbital. They are are alkali metals. They are named so because of the alkaline nature of the hydroxides and oxides.
Alkali metals are characterized by one s-electron in the valence shell of their atoms.
Alkali metals have a corresponding [Noble gas] ns1 electronic configuration. They occupy the first column of the periodic table. Alkali elements are:
They have occupied successive periods from first to seven. Francium is a radioactive element with very low half-life.
This makes them the most electropositive elements and due to the same reason, they are not found in the pure state.