Question

Which atom is bigger Na or Mg ????? why????

Answer 1

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HERE IS YØUR ANSWER

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SODIUM ATOM IS BIGGER THAN MAGNESIUM ATOM...

THIS IS BECAUSE , SODIUM ATOM HAS A NUCLEAR CHARGE OF (11+) AND MAGNESIUM ATOM HAS A NUCLEAR CHARGE OF (12+) ....WHICH MAKES THE MAGNESIUM ATOM ..SHRINK ITS SIZE...


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Answer 2

Na is bigger than Mg.

• In the periodic table as we move from left to right in a period the size of the atom decreases.
• As we move from Na to Mg one extra electron is added to the valance shell so, the nucleus strongly attracts the electron and the size of the atom decreases.
• That's why Na has a bigger size than Na.