Oxygen, atomic structure and isotopes
zł 180,00 z VAT
Previous lowest price was zł 180,00.
Description
Oxygen, atomic structure and isotopes
is an educational tool that depicts an oxygen atom model in a form of a sphere with its part sliced to show its shells and atomic core.
Additionally, there are 4 elements on the right side of the board. The first shows the symbols of nucleons. The rest are nucleons from which three of the most common isotopes can be formed.
Each atom consists of an atomic nucleus and atomic orbital which surrounds it.
The atomic nucleus contains nucleons: protons and neutrons. Each proton has a positive electrical charge, while each neutron is electrically neutral.
An atom is electrically neutral if the number of protons is equal to the number of neutrons.
Electrons are located on the electron shells. Oxygen has two shells: K and L. On the K shell, 2 electrons can be found (n=1), while on the L shell, 6 electrons (n=2).
The electrons located on the last shell are called valence electrons – they take part in creating chemical bonds.
The atomic orbital is formed by electrons bonded with the nucleus by electromagnetic interaction.
Isotopes are the atoms of the same element that have a different number of neutrons in the nucleus.
Hydrogen has many stable and radioactive isotopes. The stable isotopes differ from the radioactive ones by not decaying with time.
The most common hydrogen isotopes are 16O(it accounts for over 99% of oxygen’s natural abundance), 17O and 18O – they are all depicted in the tool.
Our depiction of an example of the oxygen atom is not scaled. The atomic nucleus isn’t proportionate because the nucleus of the oxygen atom is about 23 000 times bigger than an electron.
The moving elements of the tool allow us to discuss in detail the components of the oxygen atom. Additionally, they allow us to visualise specific isotopes by interchanging the centrepieces – circles depicting atomic nuclei of individual isotopes.
Moreover, if we have green and red beads, we can identify them as nucleons and put the appropriate amount of them into the centre – the tool becomes a sensory tool and the elements with illustrations and engraved names of the isotopes can serve as error control for independently arranging the atomic nucleus.
Adviser: M.Sc.Eng. Piotr Pacholak
Additional information
| Weight | 0,3 kg |
|---|---|
| Dimensions | 32 × 30 × 3 cm |
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