Assertion- the two electrons present in the first energy level cannot have same value of Spin Quantum number. Reason- there is only one orbital in first energy level.
Answers
Answer: both the Assertion and Reason are false.
Explanation:
Two electrons in an atom can be present in the same shell, sub-shell and orbital and have the same spin. ... This means each electron in an atom has only one set of values of n,l,m and s. Therefore both the Assertion and Reason are false.
Answer:
Assertion and reason both is correct
Explanation:
In an atomic orbital, a maximum of two electrons can be filled. For the first energy level, only one orbital , 1s is present. This particular orbital can accommodate a maximum of two electrons. According to Pauli's exclusion principle, no two electrons can have the same value of all the four quantum numbers.
Electrons present in 1s orbital can have the same value of principle, azimuthal, and magnetic quantum number but have different spin quantum numbers.
So, from the above discussion it is clear that assertion and reason both are correct.