Classification of Elements and Periodicity in Properties

Four successive members of the first two transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionisation enthalpy?

Match the oxide given in column A with its property given in column B. Which of the following options has all correct pairs?

The formation of the oxide ion, $O^{2-}(g)$ , from oxygen atom requires first an exothermic and then an endothermic step as shown in below:…

Which of the following oxide is amphoteric?

Which of the following orders of ionic radii is correctly represented?

Match the element in column I with that in column II. Column-I Column-II (a) Copper (p) Non-metal (b) Fluorine (q) Transition metal (c) Silicon (r) Lanthanoid (d) Cerium (s) Metalloid Identify the correct match :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Ionisation enthalpy increases along each series of the transition elements from left to right.…

Identify the incorrect match. Name IUPAC Official Name (a) Unnilunium (i) Mendelevium (b) Unniltrium (ii) Lawrencium (c) Unnilhexium (iii) Seaborgium (d) Unununium (iv) Darmstadtium

The increasing order of the atomic radii of the following elements is: $\left(a\right)C$ $\left(b\right)O$ $\left(c\right)F$ $\left(d\right)Cl$ $\left(e\right)Br$

The class of drug to which chlordiazepoxide with above structure belongs is :

Match List$-I$ with List $-\mathrm{II}$ : List $-I$ List$-\mathrm{II}$ $\left(a\right)$ $\mathrm{NaOH}$ $\left(i\right)$ Acidic $\left(b\right)$ $\mathrm{Be}(\mathrm{OH})_{2}$ $\left(\mathrm{ii}\right)$ Basic…

Identify the elements $X$ and $Y$ using the ionization energy values given below : $\begin{matrix} & \mathrm{Ionization}\mathrm{energy} & (\mathrm{kJ}/\mathrm{mol}) \\ & 1^{\mathrm{st}} & 2^{\mathrm{nd}} \\ X & 495 &…