Under Washington states criminal code, what are the penalties for kidnapping in the second degree?

Kidnapping in the 2nd degree is a class B felony and a sentence will depend on many factors, including prior offenses and related crimes.
I have pasted a link to the statute.
http://apps.leg.wa.gov/rcw/default.aspx?cite=9A...

Unfortunately, this type of question does not have a simple answer. There are too many variables that come into play in any case to determine what a sentence will be, when you provide no factual or procedural background against which an assessment can be made. What are the specific statutory codes the person was arrested for? How many other charges were filed against them? What was their prior arrest history? Conviction History? Were they on probation or parole at the time? In addition to these issues, the litany of aggravating and mitigating factors that can affect the sentence is not short. Respectfully, a statutory sentencing range frequently has no correlation to the sentence actually imposed. Good luck.

DISCLAIMER I do not practice law in your State. This answer is provided solely for informational purposes only. This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.