Periodic Proper...

The element having least difference in the values of first and second ionization potential is

The Modern Periodic Law was given by

Directions: The following question has four choices, out of which ONLY ONE is correct.

The first four ionisation energy values of an element are 191, 578, 872 and 5962 kcal. The number of valence electrons in the element is

The electronegativity of Be is the same as

Atomic number of next inert gas, if discovered, will be

The ionization potential of Na would be numerically the same as the

With the increase of atomic number across a period, there is

Which of the following configurations is associated with the biggest jump between 2^nd and 3^rd I.E.?

Which element has the maximum electron affinity?

The ion which has the maximum value of hydration energy is

Which element has the highest 1^st ionisation energy?

The process requiring absorption of energy is

Which of the following elements has the greatest tendency to lose electrons?

To which group of the periodic table does the element with electronic configuration 1s², 2s², 2p⁶, 3s², 3p⁶, 3d¹⁰, 4s², 4p⁶, 4d¹⁰, 5s², 5p³ belong?

Modern periodic table is based on the atomic numbers of elements. Which of the following experiments proved the significance of the atomic number?

Choose the correct increasing order of electronegativities of the corresponding elements.

Diagonal relationship in the periodic table is shown by the elements of

Which of the following pairs contains an example of metalloid elements in the periodic table?

Iron triad of elements also contains

Which of the following statements is correct?

The decreasing order of the first ionisation energies of the following elements is

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following orders of elements is correct in terms of decreasing ionisation enthalpies?

Consider the iso-electronic series: K⁺, S^2-, Cl^- and Ca²⁺. There are four alternatives indicating the decreasing order of the radii of the ions. Choose the correct one.