Linear Combination of Atomic Orbitals

Q.

Which of the following is incorrect for Bonding Molecular Orbitals?

1. They are formed by the additive effect of the atomic orbitals.

   $\varphi$${}_0$= $\psi$${}_1$+ $\psi$${}_2$

2. They are formed when the lobes of the combining orbitals have the same sign.

3. These molecular orbitals are represented by $\sigma$ and $\varphi$.

4. The electron density decreases in the region between the nuclei of the atoms.

Q.

Generalize the rules for writing electronic configuration of the first eighteen elements found in the modern periodic table.

Q. The maximum number of electrons that can be filled in ${\sigma }^{\ast }3p_z$ orbital is .

1. 1
2. 2
3. 3

Q.

Which of the following will result in Anti-bonding Molecular Orbitals?

1. a, b

2. b, c

3. c, d

4. d, a