How many moles in 16.012 g

If you want you can repost this question with a picture but I need to see it in order to help you , or you can read the picture I added for you

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts