Energy from a light source is known as radiation.
Substances that exist in solution almost completely as ions are called strong electrolytes. Therefore, the answer is C.
Answer:
Group 7 or the Halogens
Explanation:
The halogens occupies the 7th group on the periodic table. The group is made of F, Cl , Br, I and At.
The elements in this group are the most reactive of all elements. They are very reactive because they have just 7 electrons in their outermost shell and they only require an electron to complete their electronic configuration to produce an octet which typically mimics the stable group VIII elements.
This makes them very highly reactive.
K, ca, sc is the right answer. Take a look at table S of your chemistry reference table.
B.liquids thanks have a great day
