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Following are some statements about mode...

Following are some statements about modern periodic table
i) It consists of s, p, d and f blocks
ii) The energy levels filling order in 6th period is 6s, 4f, 5d and 6p
iii) IIIA group contains maximum number of elements

A

i and ii

B

only i

C

ii and iii

D

all

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The correct Answer is:
C
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The following are some statements about modern periodic table i) It is based on electronic configuration ii) It contains 7 periods and 18 groups iii) Each period begins with a non - metallic element

How are the elements divided into s, p, d and f – blocks in the Modern periodic table ?

Which of the following statements about the modern periodic table are incorrect ? (a) The elements in Modern periodic table are arranged on the basis of their decreasing atomic number. (b) The elements in Modern periodic table are arranged on the basis of their increasing atomic masses. (c) Isotopes are placed in adjoining groups in the periodic table. (d) The elements in the modern periodic table are arranged on the basis of their increasing atomic number.

The following are some statements about Mendeleeff's periodic table i) It is based on increasing order of atomic numbers ii) Mendeleeff corrected the atomic weight of some elements like Be, In etc iii) (Ar,K), (Co,Ni), (Te,I) are three inverted pairs

The following are some statements about Mendeleev's peridioc table (i) It is based on increasing order of atomic numbers . (ii) Mendeleev corrected the atomic weight of some elements like Be, In, U, etc. (iii) (Ar, Ca), (Co, Cu), (Te , F) are three inverted pairs. (iv) it is based on increasing order of atomic weights.

The following are some statements about periodic properties i) Atomic size decreases from left to right in a period ii) The EA of 2nd element in VA, VIA, VIIA are greater than the first element iii) Acidic nature of oxides decreases and basic nature of oxides of elements increases down the group

Give the order of filling of electrons in the following orbitals 3p, 3d,4p, 3d and 6s.

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. What is the position of the element in the periodic table satisfying the electronic configuration (n-1)d^1 ns^2 for n=4 ?

The following are some statements about transition elements i) IIB group belong to transition elements ii) In these elements last two shells ns and (n-1)d are partially filled iii) They show variable valencies

AAKASH SERIES-PERIODIC CLASSIFICATION-OBJECTIVE EXERCISE - 2 (PERIODIC CLASSIFICATION)
  1. Which of the following is an alloy of non-transition elements?

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  2. Common oxidation state of elemental transition metal is

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  3. Configuration that does not denote a transition element

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  4. An element of 5f-series but has no electrons filled in 5f-sub shell

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  5. An element has 18 electrons in the outer most shell. The element is

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  6. Element with electronic arrangement [Ar]3d^24s^2 belongs to

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  7. Number of outer shells partially filled for representative elements

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  8. Which of the following pairs has both members from the same group of t...

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  9. The elements with atomic number 10, 18, 36, 54 and 86 are all

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  10. Among the following, the number of elements showing only one non-zero ...

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  11. Following are some statements about modern periodic table i) It con...

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  12. The atomic number of the element which is not included in the main bod...

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  13. Match the Column {:("Column - I ","Column - II "),("a) Po ","i) Liqu...

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  14. Zinc is not considered as a transition metal because

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  15. The electronic configuration of an element 'X', is 1s^2 2s^2 2p^6 3s^2...

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  16. The IUPAC name of „Bh is

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  17. Number of unpaired electrons in Gd(Z =64) and the net electrons spin a...

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  18. Identify the correct statement

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  19. The following are some statements about transition elements i) IIB g...

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  20. An element with a mass number of 81 contains 31.7% more neutrons as co...

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