Question

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Answer 1

On moving down the group 13 density

• Increases

Density is mass per volume. We know that, The effect of increased atomic mass is more than the increased size. Therefore, When moving down the group 13 of elements the density Increases...~

Answer 2

Increases

Let's see how

• On moving down the group the size of the atom increases and no of electrons increases.
• The mass also increases

$\\ \rm\hookrightarrow Density=\dfrac{Mass}{Volume}$

$\\ \rm\hookrightarrow Density\propto Mass$

• If mass is more density is more