Starts with X
Obama
100

A thing to look at bones 

X-ray 

100

Is he a Democrat or a Republican?

Democrat 

200

A musical instrument 

xylophone 

200

What state was he senator for?

Illinois 

300

The English version of the Spanish name Javier 

Xavier 

300

What state is he from?

Hawaii 

400

Leader of China 

Xi Ping 

400

What number president was he?

44

500
A company that sells phones 

XFINITY 

500

What years was he president?

2009 to 2017.