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Why can graphite conduct electricity but not diamond?

In graphite, each carbon atom is covalently bonded to three other carbon atoms. One of the four outer shell electrons of each carbon atom is therefore not engaged in bonding, and becomes delocalised. These d...
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Answered by Tierney A. • Chemistry tutor
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What is the trend in reactivity of Group 2 elements with halogens as the group is descended?

In group 2 elements, the reactivity is a measure of how easily the atoms lose outer shell electrons. An atom at the top of the group, such as magnesium, has less shells meaning the atomic radius is smaller, ...
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Answered by Maria F. • Chemistry tutor
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What is the value of 'a' when '4a-b=38' and 'b' has the value of '2'?

Firstly, we write down all the information we are given from the question into mathematical form. This equation is 4a-b=38 The value of b is 2, so b=2 We are asked to find the value of a so a=? 1. To find ou...
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Answered by Aniqah R. • Chemistry tutor
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Explain how the structure of metals allow them to form metallic bonds.

A giant metallic lattice – the crystal lattice of metals consists of regularly arranged ions (NOT atoms) surrounded by a ' delocalised sea of electrons' that form the giant lattice. The outer electrons (–) f...
KD
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What factors affect the rate of a reaction?

i) Concentration of reactants, or pressure for gases- As there are more particles in a certain volume, they collide more often so there is a greater chance of successful collisions per unit timeii) Pressure ...
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