No, your resume can’t be 1.5 pages. 1.5 pages will leave too much empty space, and make your application look unprofessional.
If you have under ten years of relevant work experience, you should only write a one page resume. If you have more than ten years, however, a two page resume is acceptable. Just make sure it’s not 1.5 pages long.
If your resume continues onto the second page, try trimming your information down to one page by cutting things like old experience, irrelevant skills, or unnecessary information about your education.