Question

Discuss the characteristics of alkali spectra.​

Answer 1

Answer:

Properties and Characteristics

Alkali metals are silvery, soft, and not very dense. They can easily be cut with a butter knife, and cesium can even melt in the palm of your hand. They have low melting points and are incredibly reactive--so reactive that they must be stored in special solutions or containers to prevent an unintended reaction. Part of what makes alkali metals so reactive is that they have one electron in their outermost electron layer. Like so many other metals, the alkali metals want nothing more than to have electronic structures like their famously stable and unreactive cousins, the noble gases.

It takes very little energy to remove that outermost electron from an alkali metal. Thus, alkali metals easily lose their outermost electron to become a +1 ion. This happens so often that it is rare to find a sample of an alkali metal with all of its electrons; most alkali metals occur in their ionic +1 form.

The energy needed to remove an electron from an element is called the first ionization energy. The alkali metals have the lowest first ionization energies of all of the elements. In fact, as you go down the 1A column, the first ionization energies get lower and lower, making cesium the most easily ionized element on the periodic table.

Answer 2

Answer:

The characteristics are given below

Explanation:

1: Alkali metals are soft, silvery and not very dense

2: They can easily be cut with a knife

3: They have low melting points and are very reactive so, that they must be stored in a special container.