Question

Predict which has more negative electronic energy. Explain your reasoning.

a. Be or Mg

b. Si or K

c. Ne or Na

Answer 1

Following is the - complete Answer -&- Explanation: for the given Question, in......typed format....

$\Rightarrow$Answer:

Following is the answer, based on ranking the elements, on the basis of increasing electro-negativity of elements.

a) Be   is more electronegative, than Mg .

b) Si  is more electronegative, than  K .

c) Ne  is more electro-negative than Na .

$\Rightarrow$Explanation:

Following is the complete Explanation, for the above Answers.

• Step - 1:

If we look up the values of Electronegativity, of different elements, measured according to the Pauling Scale, we will find the following values: i.e.

1. Electronegativity of Beryllium : Be = 1.57
2. Electronegativity of Magnesium:     Mg = 1.31

​​​​​​​Therefore, we can surely say:   Be   is more electronegative, and has more negative electronic energy, than that of  Mg.

• Step - 2:

​​​​​​​If we look up the values of Electronegativity, of different elements, measured according to the Pauling Scale, we will find the following values: i.e.

1. Electronegativity of Silicon : Si = 1.90
2. Electronegativity of Potassium:     K = 0.82

​​​​​​​Therefore, we can surely say:   Si   is more electronegative, and has more negative electronic energy, than that of  K .

• Step - 3:

​​​​​​​If we look up the values of Electronegativity, of different elements, measured according to the Allen Scale, we will find the following values: i.e.

1. Electronegativity of Neon : Ne = 4.787
2. Electronegativity of Sodium:     Na = 0.869

​​​​​​​Therefore, we can surely say:   Ne   is more electronegative, and has more negative electronic energy, than that of  Na.

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