Rank these elements according to first ionization energy from highest to lowest.
Mg - Si - S - Cl - Ar -Na
Concepts and reason
The concept used to solve this problem is based on ionization energy of an atom.
The amount of energy required to remove an electron from the ground state of the gaseous isolated atom is called ionization energy.
Fundamentals
The amount of energy required to remove one mole of most loosely bonded electrons from one mole of gaseous atom is called first ionization energy. This results in one mole of gaseous ions with a charge of +1
Answer:
Explanation:
From left to right in periodic table, atomic radius decreases and atom becomes more smaller.
With decreasing atomic radius, first ionization energy increases. Thus, decreasing order of first ionization energy of elements mention in question are as follow.
Explanation:
From left to right in a period, atomic radius decreases. Due to this outer electrons come closer to the nucleus. Thus, it becomes more difficult to remove the outer most electrons. Therefore, first ionization energy increases.