Proper Coding for Yes/No Questions

I have several forms with simple "yes/no" questions on them.  I need to use
radio buttons for the selections.

Is the following code correct for accessibility?

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<label for="smart">Are you smart?</label>
<label for="smartYes">Yes</label><input type="radio" id="smartYes" />
<label for="smartNo">No</label><input type="radio" id="smartNo" />

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Randal Rust
Covansys, Inc.
Columbus, OH