What is avogram?

Explanation

### Step-by-Step Solution:

1. **Definition of Abogram**:
- An abogram is defined as the reciprocal of the Avogadro constant expressed in grams.

2. **Understanding Avogadro Constant**:
- The Avogadro constant (denoted as \( N_a \)) is a fundamental constant in chemistry that represents the number of atoms, ions, or molecules in one mole of a substance. Its value is approximately \( 6.022 \times 10^{23} \) entities per mole.

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