Statement 1: An element that has an electron configuration of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{3}4s^2$ is a transition element.
Statement 2: The transition elements from scandium to zinc are filling the $3d$ orbitals.

Q. Choose the correct option based on the statements given:

Statement 1: Carbon always share electrons to form a covalent bond with other elements.

Statement 2: ${\text{C}}^{4+}$ and ${\text{C}}^{4-}$ions are highly unstable.

Q.

Choose the correct option based on the statements given below:

Statement 1: Carbon always shares electrons or forms a covalent bond with other elements.

Statement 2: $C^{4+}$ and $C^{4-}$ ions are highly unstable.

Q.

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

Statement - 1 : Electromagnetic radiation will be emitted for the transition $2P_z\to 2p_x$.

Statement - 2 : No transition of electron takes place between $2P_z$ and $2P_x$ orbitals.

Q. Statement 1: An acid reacts with a base to form salt and water, this type of reaction is known as neutralisation reaction.
Statement 2: Neutralisation reaction are exothermic reaction.

The correct statement for neutralisation reaction is:
(a) Both the statements are true, and statement 2 is the correct explanation for statement 1
(b) Both the statements are true, but statement 2 is not the correct explanation for statement 1
(c) Statement 1 is true, but statement 2 is false
(d) Statement 2 is true, but statement 1 is false
[1 Mark]

Q.

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

Statement - 1 : The transition of electrons $n_3\to n_2$ in H - atom will emit radiation of higher frequency than $n_4\to n_3$.

Statement - 2 : Principal shells $n_2$ $n_3$ have lower energy than $n_4$.