Determine the nuclear charge of an atom of an element of group V (15) with a mass number of 74.92 …

The charge of the atomic nucleus of an element is determined by its serial number in the periodic table of elements of Mendeleev. This element is in the V group (the group is a vertical column in the periodic system). We find in it an element, the relative atomic mass of which is 74.92 – this is As, that is, arsenic. Its serial number is 33, which means the charge of the nucleus of the atom of this element is 33.