The atomic number of barium is 56.
what do you know about the subatomic particles in an atom of this element ?

Basic Information
Name: Barium 
Symbol: Ba 
Atomic Number: 56 
Atomic Mass: 137.327 amu 
Melting Point: 725.0 °C (998.15 K, 1337.0 °F) 
Boiling Point: 1140.0 °C (1413.15 K, 2084.0 °F) 
Number of Protons/Electrons: 56 
Number of Neutrons: 81 
Classification: Alkaline Earth 
Crystal Structure: Cubic 
Density @ 293 K: 3.51 g/cm3 
Color: Silver

Atomic Structure 
Number of Energy Levels: 6
First Energy Level: 2 
Second Energy Level: 8 
Third Energy Level: 18 
Fourth Energy Level: 18 
Fifth Energy Level: 8 
Sixth Energy Level: 2
IsotopesIsotopeHalf LifeBa-130StableBa-13111.7 daysBa-132StableBa-13310.5 yearsBa-133m1.6 daysBa-134StableBa-135StableBa-135m1.2 daysBa-136StableBa-137StableBa-137m2.6 minutesBa-138StableBa-1391.4 hoursBa-14012.8 daysBa-14118.3 minutesBa-14210.7 minutes
Facts
Date of Discovery: 1808 
Discoverer: Sir Humphrey Davy 
Name Origin: From the Greek word barys (heavy) 
Uses: Medical applications, among others 
Obtained From: barytine, whiterite 

Butterfly wingspan is 7.7

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.