Periodic Proper...

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

The Modern Periodic Law was given by

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