Periodic Table Questions

(A), (B) and (C) are elements in the second short period. Oxide of (A) is ionic, that of (B) is amphoteric and of (C) large a molecule. (A), (B) and (C) have atomic number in the order -

The basic character of MgO, SrO, K₂O and NiO increases in the order -

Arrange into the order of increasing basicity (NO₂, K₂O, ZnO) -

Arrange the following hydrides in their increasing acid strength [CH₄, H₂S, PH₃ and SiH₄] -

Consider the M(OH)₃ formed by all the group 13 elements. The correct sequence of acidic strength of hydroxides [M(OH)₃] is -

The correct order regarding the electro-negativity of hybrid orbitals of carbon is ?

The pair of amphoteric hydroxides is -

Lanthanoids are -

Sodium forms Na⁺ ion but it does not form Na²⁺ because -

Ionic radii are -

The compound of vanadium has magnetic moment 1.73 BM. The vanadium chloride has the formula -

Arrange the following elements in decreasing order of their electron affinity

Match list-I (atomic number of element) with list-II (position of elements in periodic table) and select the correct answer using the codes given below the lists : List-I (a) 19 (b) 22 (c) 32 (d) 64 List-II i. p-block ii. f-block iii. d-block iv. s-b

Which of the following properties is nearly same for two families - Family-1 Be, Mg, Ca, Sr........ Family-2 He, Ne, Ar, Kr........

The correct order of increasing size is -

Least basic oxide is -

Which of the following in increasing order of paramagnetism ?

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of given atomic species ?

The first ionisation energy of Mg, Al, P and S follows the order -

The size of the species, Pb, Pb²⁺, Pb⁴⁺ decreases as -

Which statement is correct ?

Which of the following statements are correct?

Strongest reducing agent among the following is -

Which of the following is correct statement ?

Density of sodium and potassium follows the order -

Which of the following is correct order of increasing bond strength -

The electronic configuration of an element C is 1s², 2s², 2p⁶. The formula of substance containing only C will be -

The most non-metallic element among the following is -

The chloride of an element ‘L’ gives neutral solution in water. The element ‘L’ belongs to group -

3 students Ram, Shyam and Raj measured the radius of an element A. The values of their practical were not same (Ram = 110 nm, Shyam = 190 nm and Raj = 108 nm). Their teacher explained that their measurement were correct by saying that the recorded va

Consider the following statements: I. The radius of an anion is larger than that of parent atom II. The I.E. increases from left to right in a period generally III. The electro-negativity of an element is the tendency of an isolated atom to attract a

The incorrect statement among the following is-

Atomic radius decreases in a period, but after halogens, the atomic radius suddenly increases. Thus, inert gases has almost highest radius in a period. The explanation for such an increase is-

Which is most acidic oxide ?

Which of the following is wrong -

The first ionization potentials of four consecutive elements present in the second period of periodic table are 8.3, 11.3, 14.5 and 13.6 eV respectively which one of the following is the first ionisation potential of nitrogen ?

Which of the following is an amphoteric oxide?

Element P, Q, R and S belong to the same group. The oxide of P is acidic, oxide of Q and R are amphoteric while the oxide of S is basic. Which of the following element is the most electropositive ?

Moving left to right in the periodic table atomic density -

In a group moving top to down the atomic density-

Arrange F, C, O, N in the decreasing order of electronegativity -

Increasing order of electronegativity is -

The correct set of decreasing order of electronegativity is -

Arrange N, O and S in order of decreasing electron affinity -

Which of the following element is expected to have highest negative electron gain enthalpy -

Fluorine has low electron affinity than chlorine because of -

Which statement is correct -

Adding electron a neutral gaseous atom usually leads to - (i) Liberation of energy (ii) Formation of anion (iii) Proton/electron ratio decrease (iv) Proton/electron ratio increase Code in -

Highest electron-affinity is associated with the configuration -

The correct order of electron affinity for the different families is -