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X' is most inert element and 'Y' is most...

X' is most inert element and 'Y' is most reactive element in the long form of the periodic table. 'X' and 'Y' are respectively

A

H, F.

B

He, F

C

He, Cs

D

Xe,F

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The correct Answer is:
B
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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2B
  1. Following are some statements about modern periodic table i) It con...

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  2. Exhibition of various oxidation states by transition elements is due t...

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  3. X' is most inert element and 'Y' is most reactive element in the long ...

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  4. In the presence of six ligand units the degeneracy of d-orbitals is lo...

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  5. Which of the following is true

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  6. Match the following

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  7. Match the following

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  8. Match the following

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  9. Match the following

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  10. The following are some statements about noble gases i) They are betw...

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

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  12. (A): Zn is not a transition element. (R) : Elements with incomplete...

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  13. The atomic number of an element is 35. what is the total number of ele...

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  14. Regarding lanthanide contraction, some statements are given a) It a...

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  15. I1 of an element X is 899 kJ "mole"^(-1) and that of another element ...

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  16. Consider the following changes a) M((g))^(+2) rarr M((g))^(+3) + e^...

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  17. The correct order of IP2 , values among F, Na, Mg and Al is

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  18. The first (IP1) and the second (IP2) ionisation potential (kJ mol 1) o...

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  19. The ionisation energies of Lithium and Sodium are 520kJ Mol^(-1) and 4...

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  20. Successive ionisation potentials of an element M are 8.3, 25.1, 37.9, ...

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