Answer:
P-block
Explanation:
Chlorine
Atomic number (Z) 17
Group group 17 (halogens)
Period period 3
Block p-block
The primary difference between iron and steel is that the former is a metal, whereas the latter is an alloy. Iron is simply a metal element that occurs naturally on Earth. In comparison, steel is a man-made alloy that's made by mixing iron and carbon together :)
Answer:
The Pauli Exclusion Principle
Explanation:
The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.
Answer:
water
Explanation:
the other options are elements while water is 2 elements
Answer:
Expand
Explanation:
When you heat up a substance it expands