What is the atomic weight for the element that is in group

Last updated: 7/11/2022

What is the atomic weight for the element that is in group 8A and period 1? What is the atomic weight for the element that is in group 6A and period 2? What is the atomic weight for the element that is in group 1B and period 5? What is the atomic weight for the element that is in group 1A and period 6?