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What is period and how many are there?

A period is a horizontal row in the periodic table of elements, where elements are arranged according to their increasing atomic number. There are seven periods in the periodic table, with each period representing the filling of a different electron shell. As you move from left to right within a period, elements display a gradual change in properties, from metals to non-metals. The first period consists of two elements, while subsequent periods contain more elements, with the seventh period being the largest.


How many elements in the first period?

Period 1: 2 elements Period 2: 8 elements Period 3: 8 elements Period 4: 18 elements Period 5: 18 elements Period 6: 32 elements Period 7: 25 elements


How many elements are there in third period?

8 elements


Normal mice gametes contain 20 chromosomes. How many chromosomes do normal mice zygotes contain?

The answer is 40


How many elements in the original period table of elements?

103


How many elements does Cu402 have?

(Cu4O2) contain two elements: copper and oxygen.


How many laws are there in the periodic table of elements?

The periodic table of elements does not contain laws, only elements.


How many elements are in periods 6?

there are 32 elements in period 6.


How many elements are in periods 4?

There are 18 elements in period 4.


How many elements are in the sixth period?

18


How many elements are there in the first period of periodic table?

There are 2 elements in the first period of the periodic table: Hydrogen and Helium.


How many elements occur in each of the first three periods or the periodic table?

There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,