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Alkali metal what

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Alkali metal what

Posted by Himanshu Singh Singh 8 years ago

CBSE > Class 11 > Chemistry

3 answers

Chandan Kumar Soni 8 years ago

Group 1 element alkali metal.

Prince Chaudhary 8 years ago

Any of the elements lithium, sodium, potassium, rubidium, caesium and francima occupying Group I of the periodic table . 1.They are very reactive. 2. The atomic radius of these elements are increased one by one due to increasement in atomic number. 3. The ionisation enthalpy of these elements decrease when we move up to down in the group becoz the atomic size is increased and easily remove electrons. 4. Hydration enthalpy is inversely proportional to ionisation enthalpy. 5. They form ionic compound. 6. They have low melting and boiling point which decrease down the group becoz the size of metal increase.

Amar Kumar 8 years ago

An alkali metal is any of the elements found in Group IA of the periodic table. Alkali metals are very reactive chemical species which readily lose their one valence electron to form ionic compounds with nonmetals. Examples: Lithium, Potassium, Cesium.

The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids). Alkali metal, any of the six chemical elements that make up Group 1 of the periodic table namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

Sodium and potassium are the sixth and seventh most abundant of the elements.

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