Elements in a group or column in the periodic table can be expected to have similar what

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

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