Which element has exactly five electrons in the highest principal energy level (the outer shell)?
a. b
b. ba
c. p
d. mn

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

What is the most common reason for matter changing its state?

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community