Which of the following elements (shown as Bohr models) would have the lowest ionization energy?
Element A
Element B
Element a
Element D
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A
Element A
B
Element B
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Element C
D
Element D

Element D would have the lowest ionization.

(D) is correct option

Explanation:

Given that,

Number of electron in element A = 17

Number of electron in element B = 3

Number of electron in element C = 18

Number of electron in element D = 11

We know that,

The name of element A is chlorine which have 17 electron.

The name of element B is lithium which have 3 electron.

The name of element C is argon which have 18 electron.

The name of element D is sodium which have 11 electron.

We know that,

The ionization energy of the element decreases from up to down in group and increases from left to right in a period.

We need to find the element would have the lowest ionization

Using periodic table

According to periodic table the lowest Ionization energy of sodium.

Hence, Element D would have the lowest ionization.

(D) is correct option

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.