Does reactivity increase or decrease as you go down group 7?
Reactivity will decrease as you travel down group 7 in the periodic table. Group 7 elements need to gain an electron to become stable as they need 8 electrons in their outer shell. Group 7 elements only contain 7 electrons in their outer shell. This means that due to the radius of the elements increasing as you travel down the group the shielding will increase. This means that it is harder for the electron to be attracted to the positive nucleus the further down the group you go.
RW
Related Chemistry GCSE answers
All answers ▸In terms of electrons, what happens when a calcium atom reacts with chlorine atoms to form calcium chloride?
In a titration, 50 cm3 of sodium hydroxide with a concentration of 0.3 mol/dm3 was neutralised by 60 cm3 of hydrochloric acid. Calculate the concentration of the hydrochloric acid in mol/dm3.
Explain briefly the separation technique of fractional distillation, with reference to a particular example.
An industry is producing copper sulphate (CuSO4) from copper carbonate (CuCO3) and sulphuric acid (H2SO4). The company calculated that from 800 g of CuCO3 they will produce 1kg of CuSO4. However they only produced 900g. What is the percentage yield ?