Duration: 4:46

55 views

0

The minimum amount of energy required to remove the most loosely bound electron from an isolated atom
\( \mathrm{P} \) in the gaseous state is known as ionisation energy or

W. first ionisation energy or ionisation enthalpy (IE \( _{1} \) ) of the element. The energy required to remove the second electron from the monvalent cation is called second ionisation enthalpy \( \left(\mathrm{IE}_{2}\right) \). Similarly, we have third, fourth ..... ionistion enthalpies. The values of ionisation energy depends on a number of factors such as (i) size of the atom (ii) screening effect (iii) nuclear charge (iv) half filled and fully filled orbitals.
In a group, the ionisation energy decreases from top to bottom. In a period, the value of ionisation energy increases from left to right which breaks where atoms have somewhat stable configurations.

Which of the elements \( \mathrm{Na}, \mathrm{Mg}, \mathrm{Si} \) and \( \mathrm{P} \) would have the greatest difference between the first and second ionisation enthalpies -
(A) \( \mathrm{Na} \)
(B) \( \mathrm{Mg} \)
(C) \( \mathrm{Si} \)
(D) \( \mathrm{P} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live