Periodic table
Groups In Periodic Table : For Railway Group-D Exam 2018 Groups In Periodic Table Group 1 (Alkali Metals) The alkali metals are the series of elements in Group 1 of the periodic table. The series consists of the elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). Properties The alkali metals are silver-coloured (caesium has a golden tinge), soft, low-density metals. These elements all have one valence electron which is easily lost to form an ion with a single positive charge. They have the lowest ionization energies in their respective periods. This makes them very reactive and they are the most active metals. Due to their activity, they occur naturally in ionic compounds, not in their elemental state.The alkali metals react readily with halogens to form ionic salts, such as table salt, sodium chloride (NaCl). They react with water to liberate hydrogen gas. Alkali metal + water...
