The answer would be letter A.Among the alkali earth metals, the tendency to react with other substances <span>increases from bottom to top within the group. We know that when there is an increase of metallic property, there will also be an increase of reactivity. </span>
Answer:
the answer is C) the iron will repel the substance because it has more electrons than protons
In order to represent a noble gas the Orbital notation should be equal to 2, 8 or 18 for eg. 1s²
