Explanation:
Cadmium, nickel, chromium, and silver are sometimes used as protective platings. Metals have a wide range of corrosion resistance. The most active metals (i.e., those that tend to lose electrons easily)--such as magnesium and aluminum--corrode easily and are listed at the top of Table 2-1.
There are 2 significant figures. All numbers in a whole number are significant.
Something that melts, something that changes shapes (for instance, play dough being squished), something that boils, something being mixed or dissolved (but only if it doesn't chemically react), etc. A physical change is a change of state of matter.
I think it’s I
Iodine has 53 protons and 74 neutrons
Is there meant to be a photo here? there are no options so we can’t answer the question.
