comparison of atomic radii of magnesium and aluminium
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Answer:
size of magnesium is greater than aluminium because on moving from left to right atomic radii decreases due to increase in nuclear charge
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LET U KNOW WHAT IS ATOMIC RADIUS?
Explanation:
ATOMIC RADIUS IS THE DISTANCE BETWEEN THE CENTRE OF THE NUCLEAS AND OUTERMOST ELECTRON.
ACCORDING TO PERIODIC PROPERTIES , ON GOING FROM LEFT TO RIGHT IN THE PERIODIC TABLE, THE ATOMIC RADIUS DECREASES GRADUALLY.....
WHY IS THAT SO? IT HAPPENS NOT ONLY BECAUSE OF ADDING AN ELECTRON IN THE OUTERMOST SHELL, BUT THE SHEILDING EFFECT INCREASES MAKING A DIRECT CONTACT WITH THE ATTRACTION WITH THE NUCLES ... FURTHER MAKING THE ATOM SMALLER
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