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

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Question 40

Medium

State what is meant by the term isotopes in terms of subatomic particles.

[2]

Element $X\text{X}$ has two naturally occurring isotopes. Their mass numbers are $191$ and $193$ .

The percentage abundance of each isotope is:

$38%38\%$ of $191X{}^{191}\text{X}$
$62%62\%$ of $193X{}^{193}\text{X}$

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

Less than $191.5$
Between $191.5$ and $192.0$
Between $192.0$ and $192.5$
Greater than $192.5$

[2]

In 1911, Rutherford's alpha particle scattering experiment disproved the plum pudding model. Explain how two specific observations from this 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 40

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 40

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