Define Metals??????????
Answers
Answer:
Metals are those elements, which lose ions to form positively charged cations.
Explanation:
Some important terms used in the definition of metals are:
1. Elements: Elements are those substances which are made up of only one type of atoms. For example, Na is made of atoms of Na only.
2. Ions: Whenever an element looses or gains electrons to become stable (ie to complete its octave or duplet), it becomes an ion.
*Ions are of two types:
i. Cations: They are positively charged ions, formed due to a metal losing electrons.
ii. Anions: They are negatively charged ions, formed when a non-metal gains electrons.
Some examples of metals:
1. Sodium (Na)
Electronic config.: 2, 8, 1
It will lose it's one atom from the last shell to complete its octave.
2. Magnesium (Mg)
EC: 2, 8, 2
It will lose it's two atoms from the last shell to complete its octave.
3. Aluminium (Al)
EC: 2, 8, 3
It will lose it's three atoms from the last shell to complete its octave.
Some more info on metals:
1. Generally, metals are shiny, hard, sonorous, malleable and ductile.
2. They generally form basic oxides.
3. Different metals react with different forms of water; some don't react with water.
4. A more reactive metal displaces a less reactive metal from its salt solution.
5. Down a group in a periodic table, metallic character increases and across a period, metallic character decreases.
Answer:
➡️Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons.
➡️Metal is a substance which is shiny , ductile, and is a good conductor of heat and electricity.