The mol.wt of an Oxide of Hydrogen is 34. Therefore the number of covalent bonds in its molecule are

Options

A. 4
B. 5
C. 2
D. 3

Explanation

To determine the number of covalent bonds in the oxide of hydrogen with a molecular weight of 34, we can follow these steps:

### Step 1: Identify the Oxide of Hydrogen
The molecular weight of the oxide of hydrogen is given as 34. The common oxides of hydrogen are water (H₂O) and hydrogen peroxide (H₂O₂).

### Step 2: Calculate the Molecular Weight of H₂O
- For water (H₂O):
- Hydrogen (H) has an atomic weight of approximately 1 g/mol.
- Oxygen (O) has an atomic weight of approximately 16 g/mol.

The molecular weight of H₂O is calculated as:
\[ \text{Molecular Weight of H₂O} = (2 \times 1) + (1 \times 16) = 2 + 16 = 18 \text{ g/mol} \]

### Step 3: Calculate the Molecular Weight of H₂O₂
- For hydrogen peroxide (H₂O₂):
- The molecular weight is calculated as:
\[ \text{Molecular Weight of H₂O₂} = (2 \times 1) + (2 \times 16) = 2 + 32 = 34 \text{ g/mol} \]

### Step 4: Confirm the Oxide
Since the molecular weight of H₂O₂ is 34 g/mol, we confirm that the oxide of hydrogen in question is hydrogen peroxide (H₂O₂).

### Step 5: Determine the Number of Covalent Bonds in H₂O₂
- In H₂O₂, the structure can be represented as:
- H-O-O-H
- Analyzing the bonds:
- There are two O-H bonds (one for each hydrogen atom).
- There is one O-O bond (the bond between the two oxygen atoms).

Thus, the total number of covalent bonds in H₂O₂ is:
\[ \text{Total Covalent Bonds} = 2 \text{ (O-H)} + 1 \text{ (O-O)} = 3 \]

### Conclusion
Therefore, the number of covalent bonds in the molecule of the oxide of hydrogen (H₂O₂) with a molecular weight of 34 is **3**.

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