Answer:
1 and 3
Explanation:
The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.
It allows electrons to flow from the anode to the cathode.
4P + 502 -> P4O10 this is the answer
Answer:
carbon
Explanation:
Atomic radius represents the distance from the nucleus to the outer shell of an element.
