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Which of the following atoms has the low...

Which of the following atoms has the lowest ionization potential ?

A

`""_(7)^(14) N`

B

`""_(55)^(133) Cs`

C

`""_(18)^(40) Ar`

D

`""_(8)^(16) O`

Text Solution

Verified by Experts

The correct Answer is:
B
The ionisation potential increase from left to right in a period and decrease from top to bottom in a group .Therefore ceasium will have the lowest ionisation potential
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Knowledge Check

  • Which of the following elements has the lowest ionization potential ?

    A
    N
    B
    O
    C
    F
    D
    Ne

  • The energy required to pull the most loosely bound electrons from an atom is known as ionization potential. It is expressed in electron volts. The value of ionization potential depends on three factors :(i) the charge on the nucleus (ii) the atomic radius and (iii) the screening effect of inner electron shells. Which of the following elements has the least ionization potential?

    A
    Lithium
    B
    Cesium
    C
    Magnesium
    D
    Calcium

  • Which of the following species has lowest ionization potential ?

    A
    O
    B
    `O_(2)`
    C
    `O_(2)^(+)`
    D
    `O_(2)^(-)`

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