Periodic Table Questions

The order of size is -

Which of the following sequences is correct for decreasing order of ionic radius -

Arrange the elements in increasing order of atomic radius Na, Rb, K, Mg -

Which of the following has largest radius -

Atomic radii of Fluorine and Neon in Angstrom units are given by -

Which group of atoms have nearly same atomic radius -

The correct order of size would be -

Arrange in the increasing order of atomic radii of the following elements O, C, F, Cl, Br -

In which of the following compounds manganese show maximum radius -

The screening effect of d-electrons is -

The ionic radii of N³⁻, O²⁻ and F⁻ are respectively given by -

Match list-I with list-II and select the correct answer using the codes given below - List-I (I) Li⁺ (II) Na⁺ (III) Br⁻ (IV) I⁻ List-II Radius (in pm) (a) 216 (b) 195 (c) 60 (d) 95 Codes : I II III IV

The correct order of atomic size of C, N, P, S follows the order -

Z/e ratio for N³⁻, O²⁻ and F⁻ respectively will be -

In the general electronic configuration - (n – 2)f¹–¹⁴ (n – 1)d⁰–¹ ns², if value of n = 7 the configuration will be -

As applied to periodic table, which of the following sets include only magic numbers -

The atom having the valence shell electronic configuration 4s² 4p² would be in -

Atomic number 15, 33, 51 represents the following family -

Atomic number of Ag is 47. In the same group the atomic number of elements placed above and below Ag will be -

The number of elements in 5th and 6th period of periodic table are respectively -

The electronic configuration of an element is 1s²,2s²2p⁶,3s²3p⁴. The atomic number of element present just below the above element in periodic table is -

For Rb(Z=37), points out the number of electrons present in L and N shells respectively -

There are 10 neutrons in the nucleus of the element zM19. It belongs to -

The name ‘Rare earths’ is used for -

From the list given below, elements which belongs to the same group or sub-group are -

238/92 U (IIIB) changes to 234/90 Th by emission of α-particle. Daughter element will be in -

The discovery of which of the following group of elements gave a death blow to the Newlands Law -

The elements of groups, 1, 2, 13, 14, 15, 16 and 17 are collectively called -

Modern periodic table is based on atomic no. experiments which proved importance of at no. was -

Elements which occupied position in the lother meyer curve, on the peaks, were -

Which of the following set of elements obeyes Newland’s octave rule -

Which of the following is not a Doebriner triad-

The decreasing order of the second ionization energy of K, Ca and Ba is (At. Nos. K = 19, Ca = 20, Ba = 56)

The correct decreasing order of atomic size among the following species is : Ar, K+, Cl–, S2–, Ca2+

The electronic configuration of an element is 1s2, 2s22p6,3s23p4. The atomic number of the element present just below the above element in the periodic table -

The atom having the valence shell electronic configuration 4s² 4p² would be in-

From atomic no. 1 to atomic no. 110 how many of them contain e⁻ in f-subshell ?

Which among the following oxides is neutral in nature?

In which of the following options, the order of arrangement does not agree with the variation of property indicated against it? (A) Mg²⁺ < Na⁺ < F⁻ < O²⁻ (ionic size) (B) Li < Na < K < Rb (metallic radius) (C) Si < C < N < O (electronegativity on Pau

The correct decreasing order of atomic radii of group 13 elements is

The elements with atomic numbers 90 to 103 are known as -

What is the value of electron gain enthalpy of Na+ if IE1 of Na = 5.1 eV ?

Values of first four ionization potential of an elements are 68, 370, 400, 485. It belongs to

The ionic radii (in Å) of N3–, O2– and F– are respectively:

The element having the highest first ionization enthalpy is:

Second ionization potential of Li, Be and B is in the order;

The most electropositive element is;

The atomic number of the element having highest electron affinity in the periodic table is;

The element having highest ionization energy among the following is;

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