Can XML attributes have spaces?

Related questions

1. What can I use XML for?
2. What is XML encoding?
3. What is the point of XML?
4. What is XML and why is it important?
5. What is an XML message?
6. What are the two types of XML parsers?
7. Can XML preserve white spaces?
8. What is XML word?
9. What is XML declaration?
10. What is <? In XML?

Tags

1. #placed
2. #which
3. #signal
4. #given
5. #significant
6. #space
7. #schema
8. #value
9. #attribute
10. #elements
11. #order
12. #context
13. #document
14. #white
15. #validating
16. #declared
17. #preserve