Question

Which pair of properties describe the elements in group 1?

★ they are chemically unstable and a solid at room temperature

★ they have one valence electron and are gaseous

★ they are chemically stable and a liquid at room temperature

★ they are gaseous and chemically stable

★ other:

Answer 1

The answer here should be the first one. This is because Group 1 elements have 1 electron in their outer shell or also known as a valence electron. They are all solid at room temperature and they are quite soft. Group 1 elements react vigorously and are more reactive as you go down the group because the atoms will more readily lose an electron to gain a full outer shell, which makes it stable.

Answer 2

Answer:they are chemically unstable and a solid at room temperature

Explanation:The correct answer is A) they are chemically unstable and a solid at room temperature. Elements in group 1, also known as the alkali metals, have one valence electron and are usually very reactive and soft metals that are solid at room temperature. They are not gaseous and are not usually chemically stable.