Sodium magnesium aluminium are elements of the third period of the modern periodic table having group number 12 13 which one of these elements has the highest valency largest atomic radius maximum chemical reactivity justify your answer starting the reason for each

Sodium magnesium aluminium are elements of the third period of the mod

1.	Sodium magnesium aluminium are elements of the third period of the modern periodic table having group number 12 13 which one of these elements has the highest valency largest atomic radius maximum chemical reactivity justify your answer starting the reason for each
Answer» have larger atomic RADIUS . aluminium have LARGEST valency and sodium have MAXIMUM CHEMICAL REACTIVITY