What is the pH scale for sodium hydroxide solution

Sodium hydroxide does not have a pH number. The pH of a solution of sodium hydroxide depends entirely on the concentration of it in that solution.

Some common bases as sodium hydroxide, ammonia and more

BaseNormalitypH

Sodium benzoate0.1N8.0

Sodium bicarbonate (baking soda)0.1 N8.4

Sodium carbonate (washing soda)0.1 N11.6

Sodium hydroxide (caustic soda)N14.0

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.