Inorganic Chemistry | Topic 4 Flashcards
State and explain the trend in melting points in group 7
As you move down the group the London forces become stronger as the size of the molecule increases with the amount of electrons. More energy is needed…
State and explain the trends in physical states in group 7
As the boiling points increase the physical states change from gas to solid
State and explain the trend in electronegativity in group 7
As you move down group 7 the electronegativity of the element decreases. As you move down the group the atomic radius of the elements increases and there is increased shielding. This means there is less attraction between the hydrogen atom and other elements forming bonds slower/weaker
Explain the trends in reactivity in halogens
The reactivity decreases as you go down the group this is due to the fact the atomic radius increases in size so there is ore distance between the nucleus and outermost shell. The reduced reaction makes it difficult to gain an extra electron.
What is the halogen displacement reactions?
The halogen displacement reaction is a reaction in which one halogen is replaced by another halogen. This reaction is driven by the fact that halogens have different electron affinities, and the halogen with the lowest electron affinity will displace the halogen with the highest electron affinity.
Whats the reaction when cl2 reacts with NaCl
No reaction
Whats the reaction when br2 reacts with NaCl,
No reaction
Whats the reaction when Br2 reacts with NaCl
No reaction
Whats the reaction when l2 reacts with NaCl
No reaction
Whats the reaction when cl2 reacts with NaB
Orange solution is formed (Br2)
Whats the reaction when Br2 reacts with NaBrno
No reaction
Whats the reaction when I2 reacts with NaBrno
No reaction
Whats the reaction when cl2 reacts with NaI
Brown solution is formed (I2)
Whats the reaction when Br2 reacts with NaI
Brown solution is formed (I2)
Whats the reaction when I2 reacts with NaI
No reaction
