Xalkogenl?r
? periodik c?dv?ld? 16-cı qrupda yerl???n
elementl?rdir
. Bu qrupda 6 element yerl??ir.
[1]
- ↑
Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements (New ed.). New York, NY: Oxford University Press. pp. 375?383, 412?415, 475?481, 511?520, 529?533, 582.
ISBN 978-0-19-960563-7
.