Periodic Properties (Chapter Test - Medical) - Class 12 MCQ

The correct order of decreasing first ionization energy is

An element has the electronic configuration 1s²2s²2p⁶3s²3p⁶3d⁸4s² What will be its position in the periodic table ?

Which of the following ions is smallest in size ?

The number of elements in the fifth period of periodic table is

An element X belongs to fourth period and fifteenth group of the periodic table. Which one of the following is true regarding the outer electronic configuration of X ?

The element with atomic number 113 has recently been discovered. Its electronic configuration would be similar  to that of

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is

Identify the wrong statement in the following.

Element with atomic number 56 belongs to which block?

With which one of the following configurations, the lowest value of first I.E. is associated ?

Match the column I with column II and mark the appropriate choice.

The five successive ionisation energies of the element are 800, 2427, 3658, 25024 and 32824 kJ mol^–1 respectively. The number of valence electrons is

The electronic configuration of few elements is given below. Mark the statement which is not correct about these elements.
I. 1s²2s²2p⁶3s¹        II. 1s²2s²2p⁵
III. 1s²2s²2p⁶            IV. 1s²2s²2p³

Match the List I with List II and select the correct answers

The first ionization potential of Na is 5.1 eV. The value of electron gain enthalpy of Na⁺ will be

Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture ?

Match the atomic numbers given in column I with the block in which the element is placed in column II and mark the appropriate choice.