Which one of the following elements is most likely to form a 2– ion?
question 4 options:

a) selenium

b) scandium

c) silicon

d) strontium

e) iodine

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

As you move from right to left on the periodic table the atomic radius fill in the blank

In which phase(s) do the molecules take the shape of the container?