The number of significant figures is 10.3406 g in :

Options

A. 2
B. 3
C. 6
D. 4

Answer

To determine the number of significant figures in the number 10.3406 g, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Non-Zero Digits**:
- The first step is to identify all the non-zero digits in the number. In 10.3406, the non-zero digits are 1, 3, 4, and 6.

2. **Count Non-Zero Digits**:
- Count the non-zero digits identified in the previous step. There are four non-zero digits: 1, 3, 4, and 6.

3. **Identify Leading Zeros**:
- Next, we check for any leading zeros. In this case, there are no leading zeros before the digit 1.

4. **Identify Captive Zeros**:
- Now, we look for any captive zeros (zeros between non-zero digits). In 10.3406, the zero between 3 and 4 is a captive zero and is significant.

5. **Identify Trailing Zeros**:
- Finally, we check for any trailing zeros. There are no trailing zeros after the digit 6 in this number.

6. **Count All Significant Figures**:
- Now, we can count all the significant figures. The significant figures in 10.3406 are:
- Non-zero digits: 1, 3, 4, 6 (4 significant figures)
- Captive zero: 0 (1 significant figure)
- Therefore, the total number of significant figures is 4 (non-zero) + 1 (captive zero) = 6 significant figures.

### Conclusion:
The number of significant figures in 10.3406 g is **6**.