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Each of the following properties shows a regular trend in Group 1A(1). Predict whether each increases or decreases down the group:(a) density;



Answer :

a)  Density increases down the group.

The group 1 is also called as Alkali metals.

Alkali metals are the metals which are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides.

Alkali metals has a smaller radius and it gradually increases down the group. Thus, the mass also increases down the group.

As, mass is increased down the group, density also increases down the group.

Density is defined as the mass of a substance per unit volume.

Density = mass of the substance ÷ volume of the substance.

Order of the density of alkali metals: Li < Na < Rb < K < Cs.

Caesium has the highest density because it has the greater radius than the other alkali metals.

To know more about Alkali metals, refer to this link;

https://brainly.com/question/18153051

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