What are common physical and chemical features of alkali metals?

– They are light in color. – Due to their large atomic size, they have low density. – They have low melting & boiling point due to weak metallic bonding. Each alkali metal shows properties such as Increased atomic radius, decreased electronegativity and decreased melting & boiling points.

What did you notice about the chemical properties of alkali metals?

The alkali metals are a group of chemical elements from the s-block of the periodic table with similar properties: they appear silvery and can be cut with a plastic knife. Alkali metals are highly reactive at standard temperature and pressure and readily lose their outermost electron to form cations with charge +1.

What are the properties of alkali and alkaline earth metals?

Alkaline earths have low electron affinities and low electronegativities. As with the alkali metals, the properties depend on the ease with which electrons are lost. The alkaline earths have two electrons in the outer shell. They have smaller atomic radii than the alkali metals.

What are the chemical properties of Group 2 elements?

Group 2: Chemical Properties

• relatively reactive, but less than high reactive alkali metals.
• form halides when reacted with halogens.
• form oxides when reacting with air, leading to a dull appearance in pure form.
• form 2+ charge in cationic form.
• form ionic bonds with other negatively charged ionic forms of elements.

What are the two most reactive elements in the alkali metals?

The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive.

What are chemical properties of transition metals?

Properties of transition elements include:

• have large charge/radius ratio;
• are hard and have high densities;
• have high melting and boiling points;
• form compounds which are often paramagnetic;
• show variable oxidation states;
• form coloured ions and compounds;
• form compounds with profound catalytic activity;

What are three similar properties of alkali metals?

What are the similar properties of alkali metals?

• They are shiny, soft, metals.
• They are very reactive.
• They all have one valence electron in the outermost shell which they seek to lose in order to have a full outer shell.
• They are soft enough to be cut with a knife.
• When exposed to air, they tarnish due to oxidation.

What are the three properties of the alkali metals?

Table Salt contains Sodium as a constituent

What are 3 facts about alkali metals?

Alkali metals have different colored flames when burnt. They are sodium (orange/yellow), lithium (red), potassium (lilac), rubidium (red) and cesium (purple/blue). Alkali metals are more reactive and have more atomic radius as we move down the table. Francium is the most reactive member of the group.

What properties do alkali metals have in common?

The alkali metals exhibit many of the physical properties common to metals, although their densities are lower than those of other metals. Alkali metals have one electron in their outer shell, which is loosely bound. This gives them the largest atomic radii of the elements in their respective periods.

What elements belong to alkali metals?

The alkali metals are the elements located in Group IA of the periodic table. The alkali metals are lithium, sodium, potassium, rubidium, cesium, and francium.