Which of these is one similarity of the elements in the first group of the periodic table? A.
The elements in the group have similar atomic masses.
B.
The elements in the group have the same number of electrons.
C.
The elements in the group are very unreactive metals.
D.
The elements in the group react with oxygen in similar ways.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?

Ground state electron configuration for element v