According to the periodic table, which two elements have an atomic mass less than twice their atomic number?
1 Answer
Jul 17, 2017
Hydrogen and oxygen
Explanation:
According to the periodic table:
- Hydrogen
#2 xx "atomic number" = 2#
#"atomic mass" = 1.008# #"amu"#
- Oxygen
#2 xx "atomic number" = 16#
#"atomic mass" = 15.999# #"amu"#
