Multiple choice

The best position of hydrogen in the periodic table is above IA group. What is the reason?

In the classification of elements in the periodic table, hydrogen is placed at the top of IA group. It has many similarities with the group elements.

  1. Electropositive nature of all the IA group elements

  2. All the elements have similar outermost shell configuration

  3. Elements have the tendency to form ionic compouds.

  4. All the elements have low melting points.

  5. All of the above
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E Correct answer
Explanation

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