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Explain why reactivity increases as you go down group 1 (alkali metals) of the periodic table (3 marks)

As you go down the group, there is an additional electron shell added each time (1). These electron shells hold negatively charged electrons that shield the positive nucleus from the outer shell electron....

Answered by Alice G. Chemistry tutor
1295 Views

Explain why reactivity increases as you go down group 1 (alkali metals) of the periodic table ( 3 marks )

As you go down the group, there is an additional electron shell added each time (1). These electron shells hold negativley charged electrons that shield the positive nucleus from the outer shell electron....

Answered by Alice G. Chemistry tutor
5982 Views

What is a mole?

A mole is a unit for amount of substance.

This unit was created because we needed a common unit which could be used to convert from eg. number of atoms/molecules to grams or concentration...

Answered by Daniella B. Chemistry tutor
1975 Views

What is a simple way to classify the enthalpy of a reaction?

The evolution of heat from a reaction is often classified as being exothermic or endothermic, but how do you know which one it is in order to assign the appropriate sign?

 A simple way to...

Answered by Victor O. Chemistry tutor
2019 Views

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