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
Memory
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
In a given atom no two electrons can have the same values for all
In a given atom no two electrons can have the same values for all the four quantum numbers.This is called…
7 years ago
The number of spherical nodes in 3p orbitals are
The number of spherical nodes in 3p orbitals are Options (a) one (b) three (c) none (d) two Correct Answer:…
7 years ago
The pair of species with the same bond order is:
The pair of species with the same bond order is: Options (a) O₂²⁻, B₂ (b) O₂⁺, NO⁺ (c) NO, CO…
7 years ago