Chemistry part 4

When the sulfate of metal has the formula MSO, its ionic form will be M² and SO, while the ionic form of chlorine is Cl. Hence, two chlorine atoms from the metal will combine to form the neutral molecule MCL

Transition metals have the following characteristics:

(1) They occur in the form of colored compounds.

(2) They are good conductors of heat and electricity.

(3) Their shape can be changed easily.

(4) They retain the property of being less electroneg- ative.

(5) They have to have tensile strength and high density.

(6) They are less reactive than alkali metals like sodium.

It is clear from the above the sansition metals do not tend to gain electrons.

Lanthanides are the members of the 15 naturally oc- curring metallic chemical elements, whose atomic numbers fall between 57 (Lanthanum) and 71 (Lu- tetium)

Railway tracks are made of iron, so aluminium is used as a reducing agent to displace iron to join them. Due to the formation of iron oxide due to excessive heat, it is reduced by aluminium metal.

Radium is an element of group 2, while transition elements are found in groups 3 to 12, i.e. transition metals are 40 elements in columns 3-12 and 28 elements are located in the lanthanide and actinide series.

Silver and copper are the best conductors of heat, while mercury and lead are poor conductors of he

Greenockite is an ore of cadmium (Cd). The sulfide ore of Greenockite is CdS. The sulfide ore of mercury (Hg) is cinnabar (HgS).

Copper is a metal that has antibacterial properties. Bacteria on the surface of copper or its alloys, such as brass and bronze, etc. are not able to survive for a long time

Sodium (Na) is the main element in the first group of the periodic table of fast-active metals, which is normally present in moisture. It also starts burning after interacting with water. It is a soft metal. Due to its reactivity, it is kept in kerosene.

Sodium (Na) reacts with fluorine (F,) to form sodium fluoride (NaF). It is an ionic compound, which is a good conductor of electricity in a liquid state. Sodium fluoride is also used in the prevention of tooth decay.