d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge

Question 61

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How many 3d electrons are present in the Ni^2+ ion, and how would they be expected to occupy the d-orbitals in an octahedral complex (assuming a weak field ligand like water)?

10 electrons; t2g^10 eg^0
8 electrons; t2g^6 eg^2
6 electrons; t2g^6 eg^0
8 electrons; t2g^8 eg^0

Question 62

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How many 3d electrons are present in the Co^2+ ion, and how would they be expected to occupy the d-orbitals in an octahedral complex (assuming a weak field ligand like water)?

9 electrons; t2g^9 eg^0
7 electrons; t2g^6 eg^1
7 electrons; t2g^7 eg^0
5 electrons; t2g^5 eg^0

Question 63

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What is the electronic configuration of the element with atomic number 109 (Meitnerium)?

[Rn] 5f^14 6d^8 7s^1
[Rn] 5f^14 6d^7 7s^2
[Rn] 5f^13 6d^8 7s^2
[Rn] 5f^15 6d^6 7s^2

Question 64

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What is the electronic configuration of the element with atomic number 101 (Mendelevium)?

[Rn] 5f^12 6d^1 7s^2
[Rn] 5f^14 7s^1
[Rn] 5f^13 7s^2
[Rn] 5f^11 6d^2 7s^2

Question 65

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What is the electronic configuration of the element with atomic number 91 (Protactinium)?

[Rn] 5f^3 7s^2
[Rn] 5f^2 6d^1 7s^2
[Rn] 5f^1 6d^2 7s^2
[Rn] 5f^4 7s^1

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