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Consider the third period of the periodic table. Which element has the smallest atomic radius? A) argon B) scandium C) silicon D) sodium

Respuesta :

The answer is Argon.  In the third period of the periodic table, the element which has the smallest atomic radius is Argon.has 71 pm.  Scandium has 184 pm, Silicon has 111 pm and Sodium has 190 pm.  

Answer:

The answer is: (A) - Argon