The screening effect of d-electrons is
The screening effect of d-electrons is Options (a) equal to that of p-electrons (b) more than that of p-electrons (c)…
7 years ago
Chemistry
Electric configuration of chalcogens in their outermost orbit is
Electric configuration of chalcogens in their outermost orbit is Options (a) s²p³ (b) s²p⁴ (c) s²p⁵ (d) s²p⁶ Correct Answer:…
7 years ago
There is no S – S bond in
There is no S - S bond in Options (a) S₂O₄²⁻ (b) S₂O₅²⁻ (c) S₂O₃²⁻ (d) S₂O₇²⁻ Correct Answer: S₂O₇²⁻Explanation:No…
7 years ago
The correct order of the decreasing ionic radii among the following isoelectronic
The correct order of the decreasing ionic radii among the following isoelectronic species are : Options (a) Ca²⁺ > K⁺…
7 years ago
The solubility of anhydrous AlCl₃ and hydrous AlCl₃ in diethylether are S₁
The solubility of anhydrous AlCl₃ and hydrous AlCl₃ in diethylether are S₁ and S₂ repectively. Then Options (a) S₁ =…
7 years ago
If electron has spin quantum number +1/2 and magnetic quantum number –1,it cannot
If electron has spin quantum number +1/2 and magnetic quantum number -1, it cannot be present in Options (a) d-orbital…
7 years ago
If r is the radius of the first orbit, the radius of nth-orbit of H-atom is given
If r is the radius of the first orbit, the radius of nth-orbit of H-atom is given by Options (a)…
7 years ago
In the cyanide ion, the formal negative charge is on
In the cyanide ion, the formal negative charge is on Options (a) C (b) N (c) Both C and N…
7 years ago
Which of the following elements will have the lowest first ionisation energy?
Which of the following elements will have the lowest first ionisation energy? Options (a) Li (b) Mg (c) Ca (d)…
7 years ago
When the first ionisation energies are plotted against atomic number
When the first ionisation energies are plotted against atomic number, the peaks are occupied Options (a) alkali metals (b) halogens…
7 years ago