The nuclei of atoms of chemical elements contain 8, 12, 29, 47 and 80 protons, respectively. Name these elements.

The nuclei of atoms of chemical elements contain 8, 12, 29, 47 and 80 protons, respectively. Name these elements. Indicate the numbers of periods and groups of the periodic system in which they are located.

Element oxygen: number of protons – 8; period number – 2; group number – VIA;
element magnesium: number of protons – 12; period number – 3; group number – IIA;
element copper: the number of protons – 29; period number – 4; group number – IB;
element silver: number of protons – 47; period number – 5; group number – IB;
element mercury: the number of protons – 80; period number – 6; group number – IIB.