Elements of group (5A).pptx

Elements of group (5A) in chemistry perodic table

1. Elements of group (5A) Kareem mahran

2. Elements of group (5A) NitrogenN7: non–metal–diatomic–gas in atmospheric air 80% Phosphor P15: non–metal–Calcium phosphate ( Ca3(PO4)2) Apatite CaF2Ca3(PO4)2(4 atom) . Arsenic As33: metalloid–Arsenic sulphideAs2S3–vapor (4atom As4 ) Antimony Sb51: metalloid–Antimony sulphide Sb2S3–vapor atoms Sb4 Bismuth Bi83: metal forming a crystal lattice–weak to conduct electricity –vapor (2atom )

3. General properties -Oxidation number: Elements of group [5–A] have several oxidation numbers because they gain electrons from 1 to 3 through covalent sharing or electrons from 1 to 5 electron and reach to the stability state

4. General properties 2-Withoxygen:All elements of this group form oxides are acidic(decreases with increasing the atomic number) such as N2O3, N2O5, P2O3, P2O5while other are amphotericSb2O3or Bi2O3or basic (increases with increasing the atomic number) Bi2O3 .

5. General properties - With hydrogen : Most of elements of this group reacts with hydrogen to form hydrides such as NH3, PH3,phosphine, Arsine AsH3 These compounds (NH3-PH3) can form coordinate bonds due to presence of pair of electrons in valence shell so it can give this electrons to the outer atoms or ions to form coordinate bond

6. General properties These compounds are basic because atom of element has one pair of electrons donated to positive proton of hydrogen which is found in the molecule of water therefore the negative hydroxyl group separated from molecule of water.

7. General properties The polarity of hydrogen compounds in this group decreases with increasing atomicnumber . -The thermally stability and the solubility in water are decreases with increasing the atomic in this group (NH4+) is more polarity than (PH4+) is more polarity than (AsH4+)

8. Allotropy It is the presence of the element in more than one form having the same chemical properties but different physical properties.Both nitrogen (gas) and bismuth (metal) have no tallo tropic.

9. Nitrogen N2

10. -Reaction of nitrogen with calcium carbide (CaCN2 )

11. 1-Ammonia gas ( NH3)

12. Properties of NH3gas

13. Preparation of ammonia gas in industry ( Haber's method )