Three different atoms of oxygen are represented as:O816,O817 and O818(a) What do the subscripts (lower figures) and superscripts (upper figures) represent?(b) What factor is responsible for the change in the superscripts 16, 17 and 18, though the element is the same?(c) What is the usual name for such atoms of an element?(d) Give the nuclear composition of O818.

Three different atoms of oxygen are represented as:O816,O817 and O8

1.	Three different atoms of oxygen are represented as:O816,O817 and O818(a) What do the subscripts (lower figures) and superscripts (upper figures) represent?(b) What factor is responsible for the change in the superscripts 16, 17 and 18, though the element is the same?(c) What is the usual name for such atoms of an element?(d) Give the nuclear composition of O818.
Answer» Three different atoms of oxygen are represented as: ${}_{8}^{16}O, {}_{8}^{17}O$ and ${}_{8}^{18}O$ (a) What do the subscripts (lower figures) and superscripts (upper figures) represent? (b) What factor is responsible for the change in the superscripts 16, 17 and 18, though the element is the same? (c) What is the usual name for such atoms of an element? (d) Give the nuclear composition of ${}_{8}^{18}O$ .