Question

Elements in a group of the Periodic Table are described below: • Soft silvery-white color • Good conductor of thermal energy • Good conductor of electricity • Atoms contain a single valence electron • Contains elements that are among the most reactive in water Which group is described? What is it generally called?

Answer 1

Answer:

Explanation:

The elements in the first group of the periodic table show these properties.These elements are called as alkali metals.Lithium,sodium,potassium are all alkali metals.These elements are soft and silvery-white coloured.These are good conductors of heat and electricity due to the presence of one electron in its outermost shell.These elements are also very reactive due to the presence of one valence electron.