The bond between two identical nonmetal atoms has a pair of electrons

Options

A. is shifted to one of the atoms
B. is shared equally between them
C. undergoes addition reactions
D. have same spin.

Answer

To solve the question regarding the bond between two identical non-metal atoms, let's break it down step by step:

### Step-by-Step Solution:

1. **Understanding Identical Non-Metal Atoms:**
- When we talk about identical non-metal atoms, we are referring to atoms of the same element, such as two hydrogen atoms (H2) or two oxygen atoms (O2).

2. **Electronegativity:**
- Identical non-metal atoms have the same electronegativity. Electronegativity is a measure of how strongly an atom attracts electrons in a bond. Since both atoms are identical, they exert equal pull on the shared electrons.

3. **Electron Sharing:**
- In a covalent bond formed between two identical non-metal atoms, the pair of electrons is shared equally. For example, in the H2 molecule, each hydrogen atom contributes one electron to the bond, resulting in a shared pair of electrons.

4. **Distribution of Electron Cloud:**
- The electron cloud around the two atoms is symmetrically distributed because of their identical nature. This means that neither atom has a greater share of the electron density.

5. **Analyzing the Statements:**
- The bond is not "shifted to one of its atoms" because the electrons are shared equally.
- The bond is indeed "shared equally between them" due to the same electronegativity.
- The statement about "undergoing addition reaction" is not applicable here, as addition reactions typically involve multiple bonds (double or triple bonds), which are not present in a simple covalent bond between identical non-metals.
- The statement about "having the same spin" is incorrect because according to the Pauli exclusion principle, no two electrons in the same orbital can have the same spin.

6. **Conclusion:**
- Based on the analysis, the correct conclusion is that the bond between two identical non-metal atoms has a pair of electrons that is shared equally between them.

### Final Answer:
The bond between two identical non-metal atoms has a pair of electrons that is shared equally between them.

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