4. Darium (Da) is the name given to the hypothetical element with an atomic number of 120. It should belong to the Alkaline Earth Metals family and have two valence electrons. (a) Would this element have a larger or smaller atomic radius than radium (Ra)? Explain your answer using atomic structure (NOT position on the periodic table) and specific terminology learned in the course] Since it's an Alkaline Earth Metal it has two valence electrons. It has a larger atomic radius than radium because the differentiating electron will enter the next shell leading to an increase in the number of shells in darium compared to radium. The valence electron is in the 7th shell for radium whereas for darium the valence electron is in the 8th shell. Therefore, darium has a larger atomic radius than radium. Page 2 of 5 U Spring 2021 (b) Write the quantum number sets that represent the two valence electrons in Da. Each box is worth a % mark. (Hint: what orbital do these two valence electrons reside in? Is, 2s. | m, m, Electron #1 Electron #2
Electronic Effects
The effect of electrons that are located in the chemical bonds within the atoms of the molecule is termed an electronic effect. The electronic effect is also explained as the effect through which the reactivity of the compound in one portion is controlled by the electron repulsion or attraction producing in another portion of the molecule.
Drawing Resonance Forms
In organic chemistry, resonance may be a mental exercise that illustrates the delocalization of electrons inside molecules within the valence bond theory of octet bonding. It entails creating several Lewis structures that, when combined, reflect the molecule's entire electronic structure. One Lewis diagram cannot explain the bonding (lone pair, double bond, octet) elaborately. A hybrid describes a combination of possible resonance structures that represents the entire delocalization of electrons within the molecule.
Using Molecular Structure To Predict Equilibrium
Equilibrium does not always imply an equal presence of reactants and products. This signifies that the reaction reaches a point when reactant and product quantities remain constant as the rate of forward and backward reaction is the same. Molecular structures of various compounds can help in predicting equilibrium.
Can you answer part b of this question below. Show all your steps please.
![4. Darium (Da) is the name given to the hypothetical element with an atomic number
of 120. It should belong to the Alkaline Earth Metals family and have two valence
electrons.
(a) Would this element have a larger or smaller atomic radius than radium (Ra)?
Explain your answer using atomic structure (NOT position on the periodic table) and
specific terminology learned in the course]
Since it's an Alkaline Earth Metal it has two valence electrons. It has a larger atomic
radius than radium because the differentiating electron will enter the next shell leading
to an increase in the number of shells in darium compared to radium. The valence
electron is in the 7th shell for radium whereas for darium the valence electron is in the
8th shell. Therefore, darium has a larger atomic radius than radium.
Page 2 of 5
U
Spring 2021
(b) Write the quantum number sets that represent the two valence electrons in Da.
Each box is worth a % mark. (Hint: what orbital do these two valence electrons
reside in? Is, 2s. |
m,
m,
Electron #1
Electron #2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6c01edc-48ff-4ba3-8215-6249ad0ead9e%2Fabec5011-9f15-452f-b981-a8ea149940cb%2Fjccs15_processed.png&w=3840&q=75)
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