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Be^(2+) is isoelectronic with which of t...

`Be^(2+)` is isoelectronic with which of the following ions ?

A

`H^(+)`

B

`Li^(+)`

C

`Na^(+)`

D

`Mg^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
Both `Be^(2+)` and `Li^(+)` have two electrons `(1 s^(2))` and hence are isoelectronic .
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Knowledge Check

  • Ag^+ ion is isoelectronic with which of the following ion?

    A
    `Cd^(+2)`
    B
    `Au^(+3)`
    C
    `Pt^(+1)`
    D
    `Pt^(+3)`

  • CN^(-) ion isoelectronic with -

    A
    `N_(2)`
    B
    CO
    C
    both a & b
    D
    none

  • Mg^(2+) ion is isoelectronic with

    A
    `Na^+`
    B
    `Ca^(2+)`
    C
    `Ar`
    D
    None of these
    • PRADEEP-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS) -Competition Focus JEE (Main and Advance)/Medical Entrance (Multiple Choice Questions (With One Correct Answer)) Group 2 Elements - Alkaline Earth Metals
    1. Be^(2+) is isoelectronic with which of the following ions ?

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    2. The second ionization enthalpy of which of the following alkaline eart...

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    3. The alkaline earth metal which has the least density is

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    4. The set representing the correct order of ionic radii is

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    5. The hydration energy of Mg^(+2) is greater than that of

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    6. Match the flame colours of the alkaline earth metal salts in the Bunse...

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    7. Which pair of the following chlorides does not impart color to the fla...

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    8. Magnesium reacts with an element (X) to form an ionic compound. If the...

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    9. The least ionic chloride is given by

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    10. Among the following alkaline earth metal halides, one which is covalen...

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    11. Which of the following is covalent ?

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    12. Which of the following compounds has the lowest melting point ?

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    13. For tow ionic solids CaO and KI, identify the wrong statement among th...

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    14. Which of the following oxides is most acidic in nature ?

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    15. Property of the alkaline earth metals that increases with their atomic...

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    16. Which of the following is the weakest base ?

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    17. Which of the following is the strongest base ?

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    18. The decreasing order of basic character of K(2)O BaO , CaO and MgO is

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    19. Which one of the following order represents the correct sequence of th...

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    20. In which of the following pairs, each member produces the same gas whe...

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