Summary
Atomic Structure Summary Sheet
- Institution
- CCEA
Atomic Structure Summary Page
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Content preview
Atomic StructureSubatomic Particle Relative Mass Relative Charge Location in atom
Proton 1 ˖1 Nucleus
Neutron 1 0 Nucleus
Electron 1/1840 ˗1 Energy Levels
Atomic Number: Same as number of protons in the nucleus of an atom
Mass number: Total number of protons and neutrons in the nucleus of an atom
RAM: Average (weighted mean) mass of an atom of an element relative to one-twelfth the mass of
an atom of carbon twelve.
RIM: Replace ‘atom’ with ‘isotope’ RMM: replace ‘atom’ with molecule RFM: replace ‘atom’ with
‘formula’
RAM = Σ( mass of isotope x relative abundance)
Σ(relative abundance)
Mass spectrometry
It is assumed that all the ions in a mass spectrum have a single positive charge
Y axis; Relative Abundance Horizontal axis; mass/ mass to charge ratio/ m/z
Diatomic elements e.g. chlorine have 5 peaks
Molecular ion peak: Last major peak/ RMM
Base peak: Peak with the highest relative abundance
A molecular ion is an ion formed from the removal of an electron from a molecule.
Electronic Configuration
Orbital: a region within an atom that can hold up to two electrons with opposite spin
S subshell: one ‘s’ orbital
P subshell: three ‘p’ orbitals D subshell: five ‘d’ orbitals
Type Energy Level Number of this Maximum Shape
type of orbital in number of
a sub shell electrons
s 1 1 2 Spherical
p 2 3 4 Dumbbell
d 3 5 10 Not required
f 4 7 14 Not required
Subshells fill in the following order: 1s,2s,2p,3s,3p,4s,3d,4p
But should be written as 3p, 3d, 4s, 4p/ Electrons are lost as: 4p, 4s, 3d, 3p, 3s, 2s, 1s
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TiarnanMcKeever. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £2.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
53340 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now