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Among the elements with atomic number 9,...

Among the elements with atomic number 9, 20, 17and 36 which is highly electropositive ?

A

Element with atomic number 9

B

Element with atomic number 36

C

Element with atomic number 17

D

Element with atomic number 20

Text Solution

AI Generated Solution

The correct Answer is:
To determine which element among those with atomic numbers 9, 20, 17, and 36 is the most electropositive, we can follow these steps: ### Step 1: Identify the Elements - **Atomic Number 9**: Fluorine (F) - **Atomic Number 20**: Calcium (Ca) - **Atomic Number 17**: Chlorine (Cl) - **Atomic Number 36**: Krypton (Kr) ### Step 2: Understand Electropositivity Electropositivity refers to the ability of an element to donate electrons. Elements that are highly electropositive tend to be metals, particularly alkali and alkaline earth metals. ### Step 3: Analyze Each Element - **Fluorine (F)**: Highly electronegative, tends to gain electrons rather than lose them. - **Calcium (Ca)**: An alkaline earth metal, known for its ability to lose two electrons easily, making it highly electropositive. - **Chlorine (Cl)**: Also electronegative, tends to gain electrons. - **Krypton (Kr)**: A noble gas, very inert, does not readily lose or gain electrons. ### Step 4: Compare Electropositivity Among the identified elements: - Fluorine and Chlorine are both electronegative and do not exhibit electropositive character. - Krypton is inert and does not participate in electron donation. - Calcium, being an alkaline earth metal, is the most electropositive as it readily loses electrons. ### Conclusion The element with atomic number 20, which is Calcium (Ca), is the most electropositive among the given elements. ### Final Answer **Calcium (Ca), atomic number 20, is the most electropositive element among the options.** ---
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