De la siguiente lista de materiales identifica si corresponde a un elemento, compuesto, mezcla homogénea o mezcla heterogénea:
Acido
acetilsalicílico,
Aire
Azúcar
Bronce
Coctel de frutas
Gasolina
humo de tabaco
oro 14 quilates
ozono
perfume
sal de mesa
sangre
sodio
agua oxigenada
aspirina
tinta
jugó naranja natural
leche entera

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

answerspecific gravity;

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.