WB JEE 2018 | Periodic Table Question 10 | Chemistry

WB JEE 2018

MCQ (Single Correct Answer)

-0.33

Out of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one?

$$(n - 1){d^8}n{s^2}$$

$$(n - 1){d^5}n{s^2}$$

$$(n - 1){d^3}n{s^2}$$

$$(n - 1){d^5}n{s^1}$$

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

Which of the following atoms should have the highest 1^st electron affinity?

WB JEE 2016

MCQ (Single Correct Answer)

-0.25

Which of the following arrangements is correct in respect of solubility in water?

CaSO₄ > BaSO₄ > BeSO₄ > MgSO₄ > SrSO₄

BeSO₄ > MgSO₄ > CaSO₄ > SrSO₄ > BaSO₄

BaSO₄ > SrSO₄ > CaSO₄ > MgSO₄ > BeSO₄

BeSO₄ > CaSO₄ > MgSO₄ > SrSO₄ > BaSO₄

WB JEE 2016

MCQ (Single Correct Answer)

-0.25

An element X belongs to fourth period and fifteenth group of the periodic table. Which of the following statements is true?

It has completely filled s-orbital and a partially filled d-orbital

It has completely filled s-and p-orbitals and a partially filled d-orbital

It has completely filled s- and p-orbitals and a half filled d-orbital

It has a half filled p-orbital and completely filled s-and d-orbitals

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