# How heavy iron really is?

Chemistry Level 2

The following are the percentage abundancies of isotopes of $$\ce{Fe}$$ (atomic number- 26):

• $$\ce{^{54}{Fe}} - 5\%$$

• $$\ce{^{56}{Fe}} - 90\%$$

• $$\ce{^{57}{Fe}} - 5\%$$

Calculate the atomic mass of $$\ce{Fe}$$ in amu.

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