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Which block of the periodic table contai...

Which block of the periodic table contains the element with configuration `1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^1`

A

s-block

B

p -block

C

d-block

D

f-block

Text Solution

AI Generated Solution

The correct Answer is:
To determine which block of the periodic table contains the element with the electron configuration `1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^1`, we can follow these steps: ### Step-by-Step Solution: 1. **Count the Total Number of Electrons**: - The configuration is `1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^1`. - Count the electrons in each subshell: - `1s^2` = 2 electrons - `2s^2` = 2 electrons - `2p^6` = 6 electrons - `3s^2` = 2 electrons - `3p^6` = 6 electrons - `3d^(10)` = 10 electrons - `4s^1` = 1 electron - Total = 2 + 2 + 6 + 2 + 6 + 10 + 1 = 29 electrons. 2. **Identify the Atomic Number**: - Since the total number of electrons is 29, the atomic number of the element is also 29. 3. **Identify the Element**: - The element with atomic number 29 is Copper (Cu). 4. **Determine the Block**: - The outermost electron configuration is `3d^(10) 4s^1`. - The last electron enters the `d` subshell (3d), which indicates that the element belongs to the d-block of the periodic table. 5. **Conclusion**: - Therefore, the element with the given electron configuration belongs to the d-block of the periodic table. ### Final Answer: The element with the configuration `1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^1` is in the **d-block** of the periodic table. ---
To determine which block of the periodic table contains the element with the electron configuration `1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^1`, we can follow these steps: ### Step-by-Step Solution: 1. **Count the Total Number of Electrons**: - The configuration is `1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^1`. - Count the electrons in each subshell: - `1s^2` = 2 electrons ...
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