$I$ . The electron configuration of copper is $[A r] 4 s^{1} 3 d^{10}$ .
$I I$ . A subshell which is $100$ % full or $50$ % full is more stable than subshells which are partially filled with a number of electrons less than or greater than half the number of electrons which can be held by the subshell.

Statement

I

is true, Statement

I I

is true and is a correct explanation of the phenomena described in

I

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Statement

I

is true, Statement

I I

is false

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Statement

I

is false, Statement

I I

is true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Statement

I

is false, Statement

I I

is false

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Statement $I$ is true, Statement $I I$ is true and is a correct explanation of the phenomena described in $I$
Copper has electronic configuration of $[A r] 4 s^{2} 3 d^{9}$ . But due to higher stability of half-filled and fully-filled configuration it exists as $4 s^{1} 3 d^{10}$ . Both statements are correct are co-related
thus option A is correct

Suggest Corrections

Similar questions

Q. Statement I F -atom has a less negative electron affinity than Cl-atom.
Statement II Additional electrons are repelled more effectively by 3p-electrons in Cl-atom than by 2p-electrons in F-atom.

Statement - I: $M g^{2 +} a n d A l^{3 +}$ are isoelectronic but ionic radius $A l^{3 +}$ is less than that of $M g^{2 +}$ .
Statement - II: The effective nuclear charge on the outer-shell electrons in $A l^{3 +}$ is more than that in $M g^{2 +}$

Q. Pick the correct option given the following statements:
Statement I Nuclide

_{13}^{30} A l

is less stable than

_{20}^{40} C a

Statement II Nuclides having odd number of protons and neutrons are generally unstable.

Q. Statement I The first ionisation energy of Be is greater than that of B.
Statement II 2p-orbital is lower in energy than 2s (J2000, (s), 1M)

Q. Statement I

P b^{4 +}

compounds are stronger oxidising agents than

S n^{4 +}

compounds.
Statement II The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.(J2008,3M)

Join BYJU'S Learning Program

I. The electron configuration of copper is [Ar]4s13d10.II. A subshell which is 100% full or 50% full is more stable than subshells which are partially filled with a number of electrons less than or greater than half the number of electrons which can be held by the subshell.