Atoms that have the same number of valence electrons in their outer shell
a.
must be atoms of the same element.
b.
belong to the same family of elements.
c.
are all metallic elements.
d.
are all nonmetallic elements.

Compare these two waves : a. the blue wave has a higher pitch, but the orange wave is louder. b.the blue and orange waves have the same volume, but the blue wave has a higher pitch. c.the blue and orange waves have the same pitch, but the blue wave is louder. d.the orange wave has a higher pitch, but the blue wave is louder.

What substance has a mass of 9.5g and volume of 2.1cm^3

What term describes technology that operates on an atomic level