Question

VA ROG,AJUTATI-MA!!!Subiectul F exercitiile 1,2,3,4,5!!!!!!!!

Answer 1

1. a. Z = 17  => 17p⁺ si 17e⁻ , A = 37 ; A=Z+N => N=A-Z = 37-17 = 20n⁰
b. Z = 17; 1s² / 2s² 2p⁶ / 3s² 3p⁵
c. 1 orbital monoelectronic de tip p

2.Z = 13 ; 1s² / 2s² 2p⁶ / 3s² 3p¹ -3e⁻ ⇒1s² / 2s² 2p⁶ / (cedeaza 3e⁻, metal)
Z= 9 ; 1s² / 2s² 2p⁵ +1e⁻ ⇒1s² / 2s² 2p⁶ / (accepta 1e⁻, nemetal)

3.Trebuie sa-ti desenez

4. Element chimic - specia de atomi cu acelasi nr. atomic Z

5. 1 mol CO₂....................2*6,022*10^23 atomi O₂
2 moli CO₂.......................x = 4*6,022*10^23 = 2,4088*10^24 atomi