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
Easy
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
Pauling’s electro negativity values for elements are useful in predicting
Pauling's electro negativity values for elements are useful in predicting Options (a) Polarity of the molecules (b) Position in the…
7 years ago
What is the packet of energy called?
What is the packet of energy called? Options (a) Electron (b) Photon (c) Positron (d) Proton Correct Answer: photonExplanation:According to…
7 years ago
The shape of IF₇ molecule is
The shape of IF₇ molecule is Options (a) octahedral (b) trigonal bipyramidal (c) tetrahedral (d) pentagonal bipyramidal Correct Answer: pentagonal…
7 years ago
Which of the following species contains three bond pairs and one lone pair
Which of the following species contains three bond pairs and one lone pair around the central atom? Options (a) H₂O…
7 years ago