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In the sixth period, the orbitals being ...

In the sixth period, the orbitals being filled with electrons are

A

5s, 5p, 5d

B

6s,6d, df

C

6s,5f,df,dp

D

6s,4f,5d,6f

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In the 5^th period the orbitals being filled are

Numerous forms of the periodic table have been devised from time to time. A modern version which is most convenient and widely used is the long or extended from of periodic table. The aufbau principle and the electronic configuration of atoms provide 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 consists of 8, 8,18, 18 and 32 elements respectively. The seventh period is incomplete and like the sixth period would have 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 families. According to the recommendations of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA, ....VIIA, VIII, IB.....VIIB. Each successive period in the periodic table is associated with the filling up next higher principal energy level following aufbau sequence. The number of elements in each period is twice the number of atomic orbitals available 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 electrons. What is the position of the element in the periodic table satisfying the electronic configuration (n-1)d^1 ns^2 for n=4 ?

Numerous forms of the periodic table have been devised from time to time. A modern version which is most convenient and widely used is the long or extended from of periodic table. The aufbau principle and the electronic configuration of atoms provide 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 consists of 8, 8,18, 18 and 32 elements respectively. The seventh period is incomplete and like the sixth period would have 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 families. According to the recommendations of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA, ....VIIA, VIII, IB.....VIIB. Each successive period in the periodic table is associated with the filling up next higher principal energy level following aufbau sequence. The number of elements in each period is twice the number of atomic orbitals available 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 electrons. Elements A, B, C, D and E have the following electronic configuration: (A) 1s^2, 2s^2 2p^1 (B) 1s^2, 2s^2 2p^6 , 3s^2 3p^1 (C ) 1s^2, 2s^2 2p^6 , 3s^2 3p^3 (D) 1s^2 , 2s^2 2p^6 , 3s^2 3p^5 (E) 1s^2 , 2s^2 2p^6 , 3s^2 3p^6 Which among these will belong to same group in the periodic table ?

Numerous forms of the periodic table have been devised from time to time. A modern version which is most convenient and widely used is the long or extended from of periodic table. The aufbau principle and the electronic configuration of atoms provide 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 consists of 8, 8,18, 18 and 32 elements respectively. The seventh period is incomplete and like the sixth period would have 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 families. According to the recommendations of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA, ....VIIA, VIII, IB.....VIIB. Each successive period in the periodic table is associated with the filling up next higher principal energy level following aufbau sequence. The number of elements in each period is twice the number of atomic orbitals available 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 electrons. An element belongs to group 17 with atomic number is 17. What is the atomic number of the element belonging to same group and present in fifth period?

What is Aufbau's principle? Give the sequence in which various orbitals are filled with electrons.

If the electron of a hydrogen atom is present in the first orbit. The total energy of the electrons is

In the ground state of Cu^(+) , the number of shells occupied, subshells occupied, filled orbitals and unpaired electrons respectively are

The radius of orbit of an electron and the speed of electron in the ground state of hydrogen atom are 5 . 5 xx 10 ^(-11) m and 4 xx 10^(6) ms^(-1) respectivley . Then , the orbital period of this electron in the first excited state will be . . . . . .

The orbital angular momentum of 3p electrons is :

BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. Highest oxidation state of +8 is given by

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  2. The most common oxidation state of Lanthanide is

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  3. In the sixth period, the orbitals being filled with electrons are

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  4. Which species has the maximum ionic radius ?

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  5. The decreasing order of second ionisation potential of K, Ca, Ba is

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  6. Highest covalent character is found in

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  7. An element with atomic number 20 will be placed in which period of the...

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  8. In inner transition elements, the differentiating electron enters into...

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  9. The maximum atomic radius exists for

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  10. Na^+ ,Mg^2+ ,Al^3+ ,Si^4+ are isoelectronic. Their ionic size follow...

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  11. The starting element in any period the periodic table is……..

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  12. The ending element in any period in the periodic table is…………

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  13. The general electronic configuration of elements of p-block is represe...

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  14. In a table of elements, each element has similar properties with eight...

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  15. Which period starts with M main shell? Name the sub-shells in it? How ...

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  16. Which is easy to remove electron between the element having electronic...

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  17. For a element, the value of electron gain enthalpy is positive. Which ...

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  18. Element with electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4...

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  19. The element with atomic number 7 is found in

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  20. Moseley calculated the number of positive charges in the atoms by anal...

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