Explanation:
The substance that is in excess that doesn't get used up as a reactant is called limiting reactant.
Answer:
B) As you move across the row, the number of electrons increases and reactivity also increases.
Explanation:
The periodic table is arranged in a way that if you go across a period, the number of protons, neutrons, and electrons in an element increases. In terms of reactivity, the most reactive elements are the ones which have a high electronegativity. The electronegativity of the elements increases as you travel to the right and upwards on the periodic table.
Answer:
An atom is composed of them
Explanation:
You can go to a website about that it will give you the answers
