Question: When it comes to aluminium the atomic numbers falls somewhere between 10 and 20?, Answer:Yes, Description of Aluminium: Chemical element with atomic number 13, Fact1:  Atomic number of aluminium is 13 so its electronic configuration is 2, 8, 3. Since it has 3 electrons in its valence shell, it will lose 3 electrons to complete its octet hence its valency is +3., Fact2:  The atomic number of Aluminium is 13 ,so its electronic configuration is 2, 8, 3 .  
Step1: What is the atomic number of aluminum?, Step2: Is #1 greater than or equal to 10?, Step3: Is #1 less than or equal to 20?, Step4: Are both #2 and #3 true?, not_definitive_answer: False, incorrect_answer: False