The one which has least mass, is

Options

A. 2 g atom of N
B. `3 xx 10^(23)` atoms of C
C. 1 mole of S
D. 7.0 g of Ag

Explanation

To determine which element has the least mass among the given options, we need to analyze the mass of each element in terms of moles and grams.

### Step-by-Step Solution:

1. **Understanding Moles and Atomic Mass:**
- A mole is a unit that represents \(6.022 \times 10^{23}\) particles (atoms, molecules, etc.). The atomic mass of an element in grams is numerically equal to the mass of one mole of that element.

2. **Calculating Mass of Nitrogen:**
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