Question

number of short period in mendeleef table,​

Answer 1

Explanation:

three periods

This is because the first three periods are called short periods. Therefore there are a total of 3 short periods in the Mendeleev periodic table.

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Answer 2

three periods

The Period number 1, 2 and 3 contain 2, 8 and 8 elements respectively. Other periods contain more than 8 elements in their period. This is because the first three periods are called short periods. Therefore there are a total of 3 short periods in the Mendeleev periodic table.