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In the modern periodic table, elements a...

In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, s, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table
The elements with atomic numbers 35,53 and 85 are all

A

noble gases

B

halogens

C

heavy metals

D

light metals

Text Solution

Verified by Experts

The correct Answer is:
B
All these elements have outermost configuration `ns^(2)np^(5)`. So they belong to Group `(12 +5 = 17)` means halogen family.
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In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, s, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table The element with atomic number 57 belongs to

In the modern periodic table, elements are arranged in order of increasing atomic numbers, which is related to the electornic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, s, p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. in accordance with the Aufbau principal, the seven periods (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids, are placed at the bottom of the main body of the periodic table Which of the element whose atomic numbers are given below, cannot be accommodated in the present set up of the long form of the periodic table ?

In the modern period table, elements are arranged in order of increasing atomic number which is related to the electric configuration. Depending upon the type of orbitals receving the last electron, the elements in the periodic table have been diviced into four blocks viz s,p,d and f. The modern periodic table consists of 7 periods and 18 groups. Each period being with the filling of a new energy shell. In according with the Aufbua principle, the seven periods (1 to 7) have 2,8, 8, 18, 18, 32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanodis and actionoids are placed at the bottom of the main body of the periodic table. Which of the elements whose atomic numbers are given below, cannot be accommodated in the present set up of the long form of the pariodic table?

Comprehension given below is followed by some multiple choice questions. Each question has one correct option. Choose the correct option. In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz s, p, d and f. The modern periodic table consists of 7 periods and 18 groups. Each, period begins with the filling of a new energy shell. In accordance with the Aufbau principle, the seven periods (1 to 7) have 2, 8, 8, 18, 18, 32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthonoids and actinoids are placed at the bottom of the main body of the periodic table (ii) The last element of the p-block in 6th period is represented by the outermost electronic configuration.

Comprehension given below is followed by some multiple choice questions. Each question has one correct option. Choose the correct option. In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz s, p, d and f. The modern periodic table consists of 7 periods and 18 groups. Each, period begins with the filling of a new energy shell. In accordance with the Aufbau principle, the seven periods (1 to 7) have 2, 8, 8, 18, 18, 32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthonoids and actinoids are placed at the bottom of the main body of the periodic table (iv) The electronic configuration of the element which is just above the element with atomic number 43 in th same group is ...........

In the modern long form of the periodic table, elements are arranged in the increasing order of

In modern periodic table, the element with atomic number Z = 118 will be:

In the modern periodic table, the place of the element with atomic number 31 is in:

In the modern periodic table, the period indicates the value of

In the modern periodic table, the period indicates the value of :

RESONANCE ENGLISH-PERIODIC TABLE & PERIODICITY-Exercise
  1. In the modern periodic table, elements are arranged in order of increa...

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  2. Comprehension given below is followed by some multiple choice question...

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  3. In the modern periodic table, elements are arranged in order of increa...

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  4. It is not possible to measure the atomic radius precisely since the el...

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  5. It is not possible to measure the atomic radius precisely since the el...

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  6. It is not possible to measure the atomic radius prectsely since the el...

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  7. The periodicity is related to the electronic configuration. That is, a...

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  8. The periodicity is related to the electronic configuration. That is, a...

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  9. The periodicity is related to the electronic configuration. That is, a...

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  10. Arrange the following ions in order of their increasing size: Li^(+), ...

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  11. Compounds that formally contain Pb^(4+) are easily reduced to Pb^(+2) ...

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  12. Assertion: F atom has a less negative electron affinity than CI atom. ...

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  13. Ionic radii of :

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  14. The correct order of radii is:

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  15. Assertion: The first ionization energy of Be is greater than that of B...

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  16. The set representing the correct order of the first ionisation potenti...

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  17. Identify the least stable ion amongst the following :

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  18. Assertion (A) : Pb^(+4) compounds are stronger oxidiising agents than...

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  19. Among the following, how many elements show only one non-zero oxidatio...

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  20. Which one of the following ions has the highest value of ionic radius?

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