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Chemistry
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Explain why the ionisation energies tend to increase across a period

As you go across a period, the next atom will have 1 more proton in its nucleus than the one before. Therefore, the nucleus of each atom will have an increasingly positive charge, meaning a stronger nucle...

Answered by Megan S. Chemistry tutor
1845 Views

How does increasing the temperature of the reactants in a reaction affect the rate of said reaction?

This is a typical GCSE chemistry question relating to collision theory. Collision theory states that for a reaction to occur, the reactant particles must collide at a sufficient level of energy. To answer...

Answered by Brian P. Chemistry tutor
2078 Views

What factors affect ionisation energy and how does each of them affect it?

  1. atomic radius: the larger the atomic radius, the smaller the attraction of the outer shell electrons to the nucleus so the ionisation energy is lower reduced as atomic radius increases. 2. nuclear c...
Answered by Harriet O. Chemistry tutor
20444 Views

Explain the difference, in shape and bond angle, between a CO2 molecule and an SO2 molecule?

In a carbon dioxide molecule, the central carbon atom is surrounded by two areas of electron density. These are the bonds to the oxygen molecules. These areas of electron density are negatively charged an...

Answered by James M. Chemistry tutor
24834 Views

Describe and explain the trend of reactivity of group 2 metals with water

reactivity increases DOWN the group

Extra shells of electrons means there is increased shielding, and therefore atomic radii increases

even though nuclear charge increases, the extra shieldi...

Answered by Amber H. Chemistry tutor
2571 Views

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