11th Class Chemistry Alkali Metals Question Bank 11th CBSE Chemistry Alkali Metals

  • question_answer Group 2 metals (Mg and Ca) are harder and denser than group 1 metals (Na and K).

    Answer:

                    In metals belonging to the group 2, the atomic sizes are less as compared to the metals of the group 1 present in the same period. For example, size of Mg is smaller as compared to Na. This means that the atoms in group 2 metals are more closely packed as compared to those belonging to group 1 and the metallic bonds in them are also stronger. Therefore, the metals of group 2 are harder and denser as compared to metals of group 1.


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