Question

Which of the following is NOT a characteristic of the Group 1A(1) elements (alkali metals)?

1) They are shiny.
2) They are good conductors of heat.
3) They react vigorously with water.
4) Most of them are liquids at room temperature.
5) They are good conductors of electricity.

Answer 1

The characteristic that is NOT true for the Group 1A(1) elements (alkali metals) is that 'most of them are liquids at room temperature.' Alkali metals are solid at room temperature, except for mercury, which is a transition metal.

Step-by-step explanation:

The question asks which of the following is NOT a characteristic of the Group 1A(1) elements (alkali metals). The characteristics listed for the alkali metals are that they are shiny, good conductors of heat, react vigorously with water, and good conductors of electricity. These traits correctly describe the alkali metals, which include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). However, the statement that 'most of them are liquids at room temperature' is incorrect as alkali metals are solid at room temperature (except for mercury, which is not an alkali metal but a transition metal and is liquid at room temperature).