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Alkali Metals

What is the m...

Question

What is the major characteristic of the first elements 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?

Q. The characteristic of the last elements in the periods of a periodic table:

Q. (i) State the number of elements in period 1, period 2, and period 3 of the periodic table.
(ii) Name the elements in period 1.
(iii) What happens to the atomic size of elements on moving from left to right in a period?

Q. Name the four types of elements of the periodic table based on the electronic configuration. Write one characteristic of each type.

Q. (a) What were the two major shortcomings of Mendeleev's periodic table? How have these been removed in the modern periodic table?
(b) Two elements X and Y have atomic numbers 12 and 16 respectively. Write the electronic configuration for these elements. To which period of the modern periodic table do these two elements belong? What type of bond will be formed between them and why?
(c) To which groups of the modern periodic table do the elements X and Y belong? Give reason for your answer.
(d) What could the elements X and Y be? Write their names and symbols.

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