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The ionisation potential is lowest for t...

The ionisation potential is lowest for the

A

halogen

B

noble gas

C

alkali metal

D

alkaline earth metal

Text Solution

Verified by Experts

The correct Answer is:
C
In a period, alkali metal has minimum nuclear charge and high atomic size. Thus, force of attraction is small in alkali metal.
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VMC MODULES ENGLISH-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -LEVEL -1
  1. Which of the following elements never has an oxidation state +1?

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  2. The fourth period of modern periodic table includes:

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  3. The ionisation potential is lowest for the

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  4. An element with high electronegativity has:

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  5. Which of the following elements has maximum electronegativity?

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  6. The paramagnetic species among the following is- Na^(+), Zn^(2+), Cu^(...

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  7. The diamagnetic species among the following is: Cu^(2+) , Cr^(3+), C...

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  8. The correct decreasing order of electropositive character among the fo...

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  9. If each orbital can take maximum of three electrons, the number of ele...

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  10. Allred – Rochow’s electronegativity depends upon

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  11. Which of the following transitions involves maximum amount of energy?

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  12. IE(1) and IE(2) of Mg are 178 and 348 kcal mol^(-1). The energy requir...

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  13. The IP(1),IP(2),IP(3),IP(4) and IP(5) of an element are 7.1, 14.3, 34....

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  14. Correct order of electronegativity of N,P,C and Si on Pauling scale is...

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  15. Which of the following have maximum electron affinity?

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  16. The electronic configuration: 1s^(2),2s^(2)2p^(6),3s^(2)3p^(6),3d^(1...

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  17. EN of the element (A) is E(1) and IP is E(2). Then EA will be

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  18. The element with atomic number 57 belongs to:

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  19. The most metallic of the following elements is:

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  20. Which set is expected to show the smallest difference in IE(1) ?

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