Period 3 Flashcards
Electric conductivity of Si ( Giant Molecular Structure)
1) Si is a SEMICONDUCTOR
2) Give rise to Delocalized electrons at HIGH TEMPERATURE
3) at high temperature, more electrons gained enough energy to overcome the nuclear Attraction
4) Electrical conductivity increase
Is SiCl4 giant molecular or simple molecular
Simple molecular
What will happen to AlCl3 at 180?
It will sublime to form Al2Cl6
NaCl with water
Undergo hydration only
Due to low charge density of Na, NaCl will not hydrolyze in water. Forming a neutral solution
NaCl with water
Undergo hydration only
Due to low charge density of Na, NaCl will not hydrolyze in water. Forming a neutral solution
State of Pcl3
Liquid
State of Pcl5
Soild
State of Pcl5
Soild
Decomposition of group 2 carbonates
Carbon dioxide and metal oxide
Decomposition of group 2 carbonates
Carbon dioxide and metal oxide
Decomposition of group 2 carbonates
Carbon dioxide and metal oxide
MgO and cold water
Reacts slowly to give a slightly soluble hydroxide
Group 17—E
1) becomes less positive down the group
2) HALOGEN less easily reduced down the group
3) oxidising power of halogen decrease down the group
4)Halides are more easily oxidized down the group.
Reducing power of Halides increase down the group
Group 17—E
1) becomes less positive down the group
2) HALOGEN less easily reduced down the group
3) oxidising power of halogen decrease down the group
4)Halides are more easily oxidized down the group.
Reducing power of Halides increase down the group
Solubility of I
For iodide, however, solubility in water increase in the presence of KI (AQ)
Due to triiodide comes Ion, forming strong ion-dipole interactions with water molecules
