A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal
that has a density of 2.71 g/cm was selected.
Metal Data
Metal
Mass (9)
22.1
42.0
9.32
8.13
Volume (cm)
3.00
4.00
5.00
3.00
3
Which of the metals was selected?

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Compare and contrast the bohr model and the electron cloud models of the atom.

Which type of fossil does this image depict?