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Total number of element in each period i...

Total number of element in each period is twice the number of__________being filled.

A

shells

B

subshells

C

orbits

D

orbitals

Text Solution

Verified by Experts

The correct Answer is:
D
The maximum capacity of an atomic orbital is of two electrons with opposite spins. Thus, the maximum number of electrons is simply twice the number of orbitals that are employed.
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Total number of elements in 6th period are:

Numerous forms of the periodic table have been revised from time to time. A modern verion, which is most convenient and widely used is the long or extended from the periodic table. The aufbau principle (electrons are filled in the progressive order of their increasing energy i.e., by n + l rule) and the electronic configuration of atom provides a theoretical foundation for the periodic classification. The horizontal rows are called periods. There are altogether seven periods. The first period consists of 2 elements. The subsequent periods consist of 8, 8, 18 and 32 elements respectively. The seventh maximum of 32 elements. Elements having similar outer electronic configurations in their atoms are grouped in vertical columns. These are referred to as groups or famillies. According to the recommendation of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA ..... VIIA, VIII, IB, ...... VII B. Each successive period in the periodic table is associated with the filling up of next higher principal energy level following aufbua sequence. The number of elements in each period is twice the number of atomic orbitals avaliable in the energy level that is being filled. All the elements are classified into four blocks, i.e., s-block, p-block, d-block and f-block depending on the type of atomic orbitals that are being filled with the last electron of the element. If aufbau rule is not followed, Ca-20 will be placed in........block.

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R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. Which of the following elements have been duly synthesized and officia...

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  2. What would be the IUPAC name and symbol for the element with atomic nu...

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  3. Total number of element in each period is twice the number ofbeing fil...

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  4. The first period (n = 1) starts with the filling ofsubshell.

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  5. The second period (n = 2) involves the filling up to electron inatomic...

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  6. The third period (n = 3) involves the filling up to electrons inelemen...

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  7. The fourth period (n = 4) does not involve the filling up of electrons...

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  8. The fifth period (n = 5) beginning with rubidium is similar to the fou...

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  9. The sixth period (n = 6) of the periodic table contains 32 elements an...

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  10. Which of the following lanthanoids does not contain 5d electron in its...

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  11. Which of the following actinoids contains 6d^(2) electrons its valence...

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  12. Which of the following groups of periodic table contains maximum numbe...

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  13. In s-block elements, the differentiating electron enters the orbital.

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  14. On the basis of chemical behavior, how many element belong to the s-bl...

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  15. A1though the elements in the periodic table are arranged according to ...

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  16. Which of the following elements is placed on its own in the table to i...

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  17. In p-block elements, theorbitals are successively filled.

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  18. The general valence shell electronic configuration of p-block elements...

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  19. How many elements belong to the p-block of the periodic table on the b...

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  20. For many years, the group 18(VIIIA) elements were called intert gases ...

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