Atomic structure

Fluorine is an element in Group 7 of the Periodic Table.

An atom of fluorine can be represented as $919F\phantom{}_{9}^{19}\text{F}$ .

Use numbers from the box to complete the sentences about this atom of fluorine.

\begin{array}{|ccccc|} \hline 9 & 10 & 19 & 28 & 38 \\ \hline \end{array}

Each number may be used once, more than once or not at all.

(i) The atomic number of fluorine is $__________\text{\_\_\_\_\_\_\_\_\_\_}$ .
(ii) The mass number of fluorine is $__________\text{\_\_\_\_\_\_\_\_\_\_}$ .
(iii) This atom of fluorine contains $__________\text{\_\_\_\_\_\_\_\_\_\_}$ protons.
(iv) This atom of fluorine contains $__________\text{\_\_\_\_\_\_\_\_\_\_}$ neutrons.
(v) This atom of fluorine contains $__________\text{\_\_\_\_\_\_\_\_\_\_}$ electrons.

[5]

Chlorine is another element in Group 7 of the Periodic Table.

Select a word or phrase from the box to complete each sentence about an atom of chlorine.

\begin{array}{|ccc|} \hline \text{fewer} & \text{more} & \text{the same number of} \\ \hline \end{array}

Each word or phrase may be used once, more than once or not at all.

(i) Compared to an atom of fluorine, an atom of chlorine has $__________\text{\_\_\_\_\_\_\_\_\_\_}$ protons.
(ii) Compared to an atom of fluorine, an atom of chlorine has $__________\text{\_\_\_\_\_\_\_\_\_\_}$ neutrons.
(iii) Compared to an atom of fluorine, an atom of chlorine has $__________\text{\_\_\_\_\_\_\_\_\_\_}$ electrons in its outer shell.

[3]

The electronic configuration of chlorine is:

[1]