Which of elements 1-36 have two unpaired electrons in the ground state?

Short Answer

Expert verified
Carbon (C) is the only element from 1 to 36 that has two unpaired electrons in its ground state, with an electron configuration of \(1s^2 2s^2 2p^2\).

Step by step solution

01

Write the electron configuration for elements 1-36.

We will write the electron configuration for each element from 1 to 36 using the Aufbau principle, which states that electrons fill the orbitals from the lowest to the highest energy levels. We follow the order 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p. 1. Hydrogen (H): \(1s^1\) 2. Helium (He): \(1s^2\) 3. Lithium (Li): \(1s^2 2s^1\) 4. Beryllium (Be): \(1s^2 2s^2\) 5. Boron (B): \(1s^2 2s^2 2p^1\) 6. Carbon (C): \(1s^2 2s^2 2p^2\) 7. Nitrogen (N): \(1s^2 2s^2 2p^3\) 8. Oxygen (O): \(1s^2 2s^2 2p^4\) 9. Fluorine (F): \(1s^2 2s^2 2p^5\) 10. Neon (Ne): \(1s^2 2s^2 2p^6\) And so on, until: 35. Bromine (Br): \(1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^5\) 36. Krypton (Kr): \(1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6\)
02

Identify which elements have two unpaired electrons

To find the elements with two unpaired electrons, we will look for those that have two electrons in the same subshell with different spins. These are represented by exponents of 2 in their electron configuration. From the electron configurations of elements 1-36, we can see that only the Carbon (C) atom has two unpaired electrons: 6. Carbon (C): \(1s^2 2s^2 2p^2\) In Carbon, there are two unpaired electrons in a 2p subshell, making it the only element in the given range that shows this property.

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