Question

Part B

Arrange the following elements in order of decreasing first ionization energy: S, Ca, F, Rb, and Si.

Rank from largest to smallest. To rank items as equivalent, overlap them.

Part B Arrange the following elements in order of decreasing first ionization energy: S, Ca, F, Rb, and Si. Rank from largest to smallest. To rank items as equivalent, overlap them. Largest first ionization energy Smallest first ionization energy The correct ranking cannot be determined. reset ? help

Answer 1

The ionization energy of an atom is the amount of energy that is required to remove an electron from a mole of atoms in the gas phase. It is more precisely known as the first ionization energy.

The ionization energy decreases from top to bottom in groups, and increases from left to right across a period.

Among S, Ca, F, Rb, and Si, F belongs to 2^nd period, S and Si belongs to 3^rd period (atomic radius of S is less than Si), Ca belongs to 4^th period and Rb belongs to 5^th period.

So the decreasing order of first ionization energy (largest to smallest) is: F > S > Si > Ca > Rb