A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 30

Medium

Define the term isotopes in terms of subatomic particles.

[2]

Element $Z\text{Z}$ has two stable isotopes. Their mass numbers are $107$ and $109$ .

The percentage abundance of each isotope is:

$28%28\%$ of $107Z{}^{107}\text{Z}$
$72%72\%$ of $109Z{}^{109}\text{Z}$

Estimate the relative atomic mass of element $Z\text{Z}$ by selecting one of the following ranges:

Less than $107.5$
Between $107.5$ and $108.0$
Between $108.0$ and $108.5$
Greater than $108.5$

[3]

Rutherford's alpha particle scattering experiment provided key evidence that disproved the 'plum pudding' model of the atom. Explain how the results of this gold foil experiment led to the proposal of the nuclear model of the atom.

[2]

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

Question 30

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

Question 30

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions