Top answers

Chemistry
A Level

How does the ionisation energy differ across period 2 from Li to Ne?

The ionisation energy across a period increases as the effective nuclear charge increases but the shielding stays the same.

.css-14jxgv6{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;}.css-14jxgv6 div:first-child{margin:10px 10px 5px 0;}.css-14jxgv6 div:last-child{margin-left:auto;}

HG
15138 Views

What is nucleophile?

A nucleophile is a species which can donate a lone pair of electrons to an electron deficient species, known as an electrophile. By doing this, a chemical bond is formed.An example of a reaction involving...

CS
Answered by Claire S. Chemistry tutor
7246 Views

What is chirality/optical isomerism?

Chirality (or optical isomerism) is a physical property of a molecule which has a non-superimposable mirror image. In other words, a molecule which, when reflected cannot be rotated in any way to make the...

MW
Answered by Matthew W. Chemistry tutor
11515 Views

What is the difference between Sn1 and Sn2 reactions?

Both Sn1 and Sn2 reactions are nucleophilic substitution reactions. Sn1 reactions proceed via 2 steps. An example of this is the substitution of a halogen group such as bromine with an OH- group forming ...

JS
Answered by Joseph S. Chemistry tutor
6032 Views

What is Gibbs Free Energy?

Gibbs free energy allows you to link together the two factors entropy and enthalpy, these factors together determine if a chemical reaction is spontaneous or not. For a reaction to be spontaneous then the...

HS
Answered by Helen S. Chemistry tutor
7392 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences