What is the major characteristic of the first element in the periods of the periodic table? What is the general name of such elements?

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Solution

The first element in every period of the periodic table have 1 valence electron. The elements are known as alkali metals.

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Similar questions

(a) What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?

(b) What is the number of elements in (a) 1st period, and (b) 3rd period, of the modern periodic table?

Occurence of characteristic properties of element at regular intervals in a periodic table is considered as periodicity in properties of elements.

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