Periodic Table Questions

Which of the following pair of elements belongs to the same period?

In the periodic table, the basic character of oxides;

Choose the incorrect match from the following.

Four elements P, Q, R and S have ground state electronic configuration as given. Which of the following option(s) represent(s) the correct order ?

Which of the following properties of group 16 elements show decreasing trend down the group? A. Atomic radius B. Ionisation enthalpy C. Electronegativity Choose the most appropriate answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion (A): Na+ and Al3+ are isoelectronic but the magnitude of ionic radius of Al3+ is less than that of Na+. Reason (R): The magnitude of effec

The single bond covalent radius of P is 0.11 nm. The single bond covalent radius of Cl will be;

Which one of the following is the reason behind fluorine having lower electron affinity than chlorine?

Pd has exceptional electronic configuration of 4d10 5s0 . It belong to;

The electronic configuration of elements A, B and C are [He]2s1 , [Ne]3s1 and [Ar]4s1 respectively. Which one of the following is the correct decreasing order for IE1 (in kJ mol–1) of A, B and C?

Electronic configuration of M³⁺ is [Ar] 3d10 4s2 , it belongs to:

Given below are two statement: one is labelled as Assertion A and the other is labelled as Reason R: Assertion (A): 18th group elements are also known as inert gases. Reason (R): Group III elements are called alkaline earth metals. In the light of th

Which of the following represents the correct order of increasing electron gain enthalpy (with negative sign) for the elements O, S, F and Cl?

Consider the following changes, A → A⁺ + e⁻ (E1) A⁺ → A²⁺ + e⁻ (E2) The energy required to pull out the two electrons are E1 and E2 respectively. The correct relationship between two energies would be:

Which of the following is the most acidic in nature?

3d transition series starts from ‘X’ and ends with ‘Y’. ‘X’ and ‘Y’ respectively are;

Consider the following ionisation reactions A(g) → A⁺(g) + e⁻ A⁺(g) → A²⁺(g) + e⁻ A²⁺(g) → A³⁺(g) + e⁻ The correct order of ionisation energies will be;

First member of a group in s-block and groups 13-17 shows anomalous behaviour due to its. (A) Small size (B) Large (Charge/radius) ratio (C) High electronegativity Correct option is;

Diagonal relationship is shown by;

For a given shell, the screening effect of d-electrons is;

Which of the following is not a Dobereiner’s Triad?

Match List-I with List-I: List-I List-II (A) 1s2 2s2 2p6 3s2 3p6 4s1 (I) d-Block element (B) 1s2 2s2 2p6 3s2 3p6 (II) Halogen (C) 1s2 2s2 2p6 3s2 3p6 3d6 4s2 (III) Alkali metal (D) 1s2 2s2 2p5 (IV) Noble gas Choose the correct answer from the options

Ce (Atomic no. = 58) is a member of;

According to Henry Moseley, what does Z represent in the graph?

In which of the following arrangements the order is not according to the property indicated against it?

The element having the greatest difference between its first and second ionization energies is;

Neutral oxide among the following is/are;

Atomic number of element Ununnilium is;

Which of the following order of atomic/ionic radius is incorrect?

In the modern long-form of the periodic table, total number of the horizontal rows and vertical columns are respectively;

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion (A): Group I elements have maximum size in their respective horizontal periods in the periodic table (excluding noble gases). Reason (R): G

Given below are two statements: Statement-I: He and Be have similar outer shell electronic configuration of ns2 type. Statement-II: Both He and Be are chemically inert. In the light of the above statements, choose the most appropriate answer from the

The species Cl- , K+ and Ca2+ contain the same number of electrons. In which order do their radii increase?

Which of the following has the largest radius?