Periodicity

Easy

The graph below shows the trend in melting points of the elements in Period 3 of the Periodic Table.

Melting points of Period 3 elements

Which of the following lists Period 3 elements in the correct order of decreasing melting point?

$Si>Mg>Al>Na>S>P\text{Si} > \text{Mg} > \text{Al} > \text{Na} > \text{S} > \text{P}$

$Al>Mg>Na>Si>S>P\text{Al} > \text{Mg} > \text{Na} > \text{Si} > \text{S} > \text{P}$

$Si>Al>Mg>S>Na>P\text{Si} > \text{Al} > \text{Mg} > \text{S} > \text{Na} > \text{P}$

$Si>Al>Mg>Na>P>S\text{Si} > \text{Al} > \text{Mg} > \text{Na} > \text{P} > \text{S}$

Periodicity Questions