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STATEMENT-1 : Among 5p and 6s, 6s orbita...

STATEMENT-1 `:` Among 5p and 6s, 6s orbital have high energy
and
STATEMENT-2 `:` `(n+l)` for5p and 6s is same.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 isTrue, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False , Statement-2 isTrue

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the energy levels of the 5p and 6s orbitals, we will analyze both statements step by step. ### Step 1: Analyze Statement 1 **Statement 1:** Among 5p and 6s, the 6s orbital has higher energy. - To determine the energy of orbitals, we can use the (n + l) rule. The principal quantum number (n) indicates the shell, and the azimuthal quantum number (l) indicates the subshell. - For the 5p orbital: - n = 5 (since it is in the 5th shell) - l = 1 (for p subshell) - Therefore, n + l = 5 + 1 = 6. - For the 6s orbital: - n = 6 (since it is in the 6th shell) - l = 0 (for s subshell) - Therefore, n + l = 6 + 0 = 6. Since both orbitals have the same value of (n + l), we need to consider the value of n. The 6s orbital has a higher principal quantum number (n = 6) compared to the 5p orbital (n = 5). According to the rules of quantum mechanics, when two orbitals have the same (n + l) value, the one with the higher n value has higher energy. Thus, **Statement 1 is true.** ### Step 2: Analyze Statement 2 **Statement 2:** (n + l) for 5p and 6s is the same. - As calculated above: - For 5p, (n + l) = 6. - For 6s, (n + l) = 6. Since both values are equal, **Statement 2 is also true.** ### Step 3: Determine the Relationship Between the Statements - Statement 1 is true because the 6s orbital has higher energy than the 5p orbital due to its higher principal quantum number (n). - Statement 2 is true because both orbitals have the same (n + l) value. - However, Statement 2 does not explain Statement 1. The reason for the higher energy of the 6s orbital is due to its higher n value, not because (n + l) is the same. ### Conclusion Based on the analysis: - **Statement 1 is true.** - **Statement 2 is true.** - **Statement 2 is not a correct explanation for Statement 1.** Therefore, the correct option is **Option B:** Statement 1 is true, Statement 2 is true, but Statement 2 is not a correct explanation for Statement 1. ---
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