To convert the number $4.620 \times 10^{-22}$ into decimal notation, you need to move the decimal point 22 places to the left.

Starting with $4.620$, moving the decimal 22 places to the left gives:

$0.00000000000000000000004620$

So, the number $4.620 \times 10^{-22}$ in decimal notation is:

$0.00000000000000000000004620$

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Related Questions:

1. How do you convert numbers from scientific notation to decimal form?
2. What are the advantages of using scientific notation over decimal notation for extremely small or large numbers?
3. How do you handle negative exponents when converting to decimal notation?
4. Why is it important to keep track of significant figures when converting between notations?
5. What are some common mistakes when writing numbers in decimal notation from scientific notation?

Tip: When converting from scientific notation to decimal notation, remember that a negative exponent means the decimal point moves to the left, and a positive exponent means it moves to the right.