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What is the trend in first ionisation energy across a period?

Overall, the general trend is an increase across the period. The decrease in shielding (as outer electrons are less influenced by the nucleus) is outweighed by an increased nuclear charge and a decreased ato...
BW
Answered by Ben W. • Chemistry tutor
13899 Views

How do I solve equations like 3sin^2(x) - 2cos(x) = 2

To solve equations like this we need to get the equation in terms of one trigonometric function, ie one of sin(x), cos(x) or tan(x) It is usually easiest to get everything in terms of whatever the linear par...
EB
Answered by Elliot B. • Maths tutor
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What is hybridisation?

Hybridisation is a chemical phenomenon that occurs in certain atoms, whereby atomic orbitals 'mix' or 'hybridise' from their usual arrangement to form a more energetically-favourable orbital arrangement. Con...
LH
Answered by Liam H. • Chemistry tutor
26248 Views

What is a coordinate bond?

A coordinate bond is a covalent bond in which both the electrons in the shared pair are donated from one atom (the donor). The properties of the covalent bond are exactly the same as a normal covalent bond.I...
SG
Answered by Shannon G. • Chemistry tutor
5798 Views

What is observed in the reaction between an acid and a carbonate?

Acids are substances that dissolve in water to generate an excess of H + ions. They react with bases to produce a salt and water. With metal carbonates, products include a salt of that metal (depending on th...
SG
Answered by Shannon G. • Chemistry tutor
21858 Views