Question

First ionisation enthalpy of two elements x and y are 500 kJ and 375 kJ respectively. Comment about their relative position in a group as well as a period​

Answer 1

Answer:

Explanation:

Position in a group : X and Y

The first ionization enthalpy of elements decreases as we move down in a group. While moving down in a group, the atomic number increases and the number of shells also increases

Position in a period : Y and X

On the periodic table, first ionization energy generally increases as you move left to right across a period. This is due to increasing nuclear charge, which results in the outermost electron being more strongly bound to the nucleus.