Question

am nevoie urgent!!....​

Answer 1

Răspuns:

particule subatomice 1.nucleoni( in nucleu) protoni =Z=13, neutroni=A-Z= 27-13= 14, in inv electronic se afla electroni= Z=13

Explicație:

Sulf Z=16, deci are 16 p in nucleu si 16 e in inv electronic, A= 32 deci n= A-Z= 32-16=16 5,4kg Al/ 27 = 0.2 kmoli Al, 1mol Al ...13NA e atunci 0.2 kmoli contin 0.2 × 1000×NA electroni