If period number and group number of any representative element(s) are same then which of the following statement is incorrect regarding such type element(s) in their ground state: (Period number and group number are according to modern form of periodic table)a)The possible value of principal quantum number is 2b)The possible value of azimuthal quantum number is zeroc)The possible value of magnetic quantum number is 1d)The species could be paramagneticCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

When period and group is same it can only for 2s2, and 2s2principle quantum number (n)=2, azimuthal quantum number (l)= 0, magnetic quantum number (m)=0,spin quantum number (s)= +1/2or-1/2.

Answer

Explanation:

When the period number and group number of any representative element(s) are the same, it means that the element is in its ground state. In this state, the electrons are arranged in the lowest energy levels available. The possible values of quantum numbers for such elements are as follows:

a) The possible value of principal quantum number is 2: This is correct because the elements in the second period have electrons in the n=2 energy level.

b) The possible value of azimuthal quantum number is zero: This is correct because the elements in the s-block have electrons in s-orbitals, which have zero azimuthal quantum number.

c) The possible value of magnetic quantum number is 1: This statement is incorrect because the magnetic quantum number can only take on values between -l and l. For s-orbitals, l=0, which means that the magnetic quantum number can only be zero.

d) The species could be paramagnetic: This is correct because the elements in the second period have unpaired electrons in their ground state, which makes them paramagnetic.

In conclusion, statement (c) is incorrect because the possible value of magnetic quantum number for elements in the ground state with the same period and group number can only be zero.

Answer

The value of magnetic quantum no ranges from -l to +l. hence if we have minm possible value of principle quantum no is =1n=1,l=o, m= -0 to +0,m=+ 1/2 or -1/2.hence possible value of magnetic quantum no is at least two

Answer

For representative elements of the same period and group say 2s2, where n =2 and since s orbital so, l=0 plus the value of spin quantum number are +1/2 &-1/2 and m=0 since s subshell has only one orbital.
So,c is incorrect.

Answer

Be 2s2

Answer

Can anyone explian how is its paramagnetic.....2s2 electrns are fully paired ,then it could be diamagnatic....
but answer in this question is paramagnetic

how

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