Cobalt has an Atomic Mass of 58.933195(5) while nickel has an atomic mass of 58.6934(4). Nickel has the lower atomic mass.
Interestingly, nickel has a lower atomic mass (58.693) than cobalt (58.933), even though cobalt has a lower atomic number (27) than nickel (28).
cobalt
Atomic mass isn't actually very important in organizing the periodic table. It all goes by the atomic number, or, the number of electrons in an element. If you make the choice to learn about orbitals, you'll find the pattern; 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s25f146d107p6 If you go through all those electron configurations, you'll get the modern periodic table. We have E1-E116 and E118. E117 was not a reproducible result, and was debunked as an actual discovery. We know E117 is out there, we just don't know how to make it yet.
Cobalt (Co) has a smaller atomic mass than Lead (Pb). Cobalt's atomic mass is only 58.9332 while lead's is 207.2.
The atomic mass of nickel is 58.69. Nickel is a metal element.
Interestingly, nickel has a lower atomic mass (58.693) than cobalt (58.933), even though cobalt has a lower atomic number (27) than nickel (28).
cobalt
Keep in mind that the atomic mass of an element is based on an average of relative abundance of stable isotopes. Nickel has several stable isotopes and Cobalt I believe has only one stable isotope. The weighted average proportionally to the relative abundance of the several Nickel isotopes is less than the average of Cobalt's isotope(s). So basically Though Nickel has a greater atomic number and the trend is for this to correlate with atomic mass because nickel exists in relatively large proportion as a lighter stable isotope Nickels average atomic mass is less than Cobalt's atomic mass. Google about relative abundance and calculating atomic mass to find all sorts of interesting things!
Atomic mass isn't actually very important in organizing the periodic table. It all goes by the atomic number, or, the number of electrons in an element. If you make the choice to learn about orbitals, you'll find the pattern; 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p67s25f146d107p6 If you go through all those electron configurations, you'll get the modern periodic table. We have E1-E116 and E118. E117 was not a reproducible result, and was debunked as an actual discovery. We know E117 is out there, we just don't know how to make it yet.
Cobalt (Co) has a smaller atomic mass than Lead (Pb). Cobalt's atomic mass is only 58.9332 while lead's is 207.2.
Nickel is a meta element. Atomic mass of it is 59.
The atomic mass of nickel is 58.69. Nickel is a metal element.
Cobalt is an atomic mass of 58.93 atomic mass units
The atomic mass of cobalt (Co) is approximately 58.93 atomic mass units (amu).
Cobalt is a meta element. Atomic mass of it is 59.
Three elements (isotopes) are known to have an atomic mass of 39.96:Ar-40 (99.6%), K-40 (0.01%) and Ca-40 (96.9%).(Percentage value of naturally occurring in elements.)
Cobalt's atomic mass is 58.9