Question

difference between metals,non-metals and metalloids on the basis of close packing​

Answer 1

Answer:

Some elements have properties that are not typical. For example:

mercury (a metal) has a low melting point and exists as a liquid at room temperature

graphite, a form of carbon (a non-metal), has a high boiling point and is also a good conductor of electricity

A substance with a high density means it has a high mass for its size.

Malleable substances can be bent or hammered into shape without shattering, while brittle substances shatter when bent or hit.

Ductile means that a substance can be drawn out into a long wire without snapping or breaking

Answer 2

Answer:

Metals:-

Metals are the most abundantly found among all elements. Metals are being placed on the left-hand side of the periodic table, and further moving up, and to the right, the metallic character decreases. Metals are further classified as basic metals, transition metals, alkali metals, alkaline earth metals, lanthanides (rare earth elements), and actinides. Example:-Alkali Metals, Alkaline Earth Metals, Transition Metals, Basic Metals.

Non-Metals:-

These elements are located on the right side of the periodic table (exception is hydrogen placed on the top left). They have low melting and boiling points.

Examples:-Carbon, oxygen, Nitrogen, Sulfur, Phosphorus, Selenium, and Hydrogen (exception), Selenium, Fluorine, Chlorine, Tennessine, Argon, Neon, Helium, Radon, Krypton, Xenon, Oganesson. (including halogens and noble gases).

Metalloids:-

Metalloids are also known as semimetals. These elements have the properties of both metals and non-metals. Metalloids play a role as semiconductors which are used in electronic devices and computers. In the periodic table, they are present in a zig-zag line between boron and aluminum and down to polonium and astatine. Metalloids may also be used to make polymers, ceramics, and batteries.

Example:-Boron, Germanium, Silicon, Arsenic, Antimony, Tellurium, Polonium, Tennessine. Although ogenesson and tennessine are the exceptions in this case.