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Assertion (A) :F atom has less electron ...

Assertion (A) :F atom has less electron than `CI^(Theta)` atom
Reason (R ) : Additional electrons are repelled more effectively by `3p` electron in `CI` atom than by` 2p` electron in F atom

A

If both (A) and (R ) correct and (R ) is the correct explanation for (A)

B

If both (A) and (R ) correct and (R ) is the correct explanation for (A)

C

If (A) is correct but (R ) is incorrect

D

If (A) is incorrect but (R ) is correct

Text Solution

Verified by Experts

The correct Answer is:
C
a. It is due to the fact that the electron inteacts in difference manner with the external magnetic field
b . This spliting is known as Zeeman effect
d. It decreases with increase in the value of atomic number as is evident from the expression
`E = - (1)/(n^(2)) [(2pi^(2)m((Ze^(2))/(4pi epsilon_(0)))^(2))/(h^(2))]`
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Assertion: F atom has a less negative electron affinity than CI atom. Reason: Additional electrons are repelled more effectival by 3p electrons in CI atom than by 2p electrons in F atom.

Assertion: F atom has less electron afffinity than Cl atom. Reason: Additional electrons are repelled more strongly by 3p electrons in Cl atom than by 2p electrons in F atom.

Assertion: F atom has less negative electron gain enthaply than Ci atom. Reason: Additional eletrons are repelled more effectively by 3 p-electronic in Ci than by 2 p-electrons is F atom.

Statement-1 : F arom has a less negative electron gain enthalpy than Cl atom. Statement-2 : Additional electron is repelled more efficiently by 3p electron in Cl atom than by 2p electron in F atom.

Knowledge Check

  • Assertion: F atom has a less negative electron affinity than CI atom. Reason: Additional electrons are repelled more effectival by 3p electrons in CI atom than by 2p electrons in F atom.

    A
    Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
    B
    Both Assertion and Reason are true, but Reason is not correct explanation of Assertion.
    C
    Assertion is true but Reason is false.
    D
    Assertion is false but Reason is true.

  • Assertion: F atom has less electron afffinity than Cl atom. Reason: Additional electrons are repelled more strongly by 3p electrons in Cl atom than by 2p electrons in F atom.

    A
    If both assertion and reason are true annd the reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but the reason is false
    D
    if assertion is false but the reason is true

  • Assertion: F atom has less electron afffinity than Cl atom. Reason: Additional electrons are repelled more strongly by 3p electrons in Cl atom than by 2p electrons in F atom.

    A
    If both assertion and reason are true annd the reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but the reason is false
    D
    if assertion is false but the reason is true
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