Question

whatare the following group known as
i ) group 1

ii) group 17

iii)group 18​

Answer 1

Answer:

Explanation:

1 ) Group 1

Group 1 is called as Alkali Metals group

These metals are called alkali metals because they form alkalies ( i.e. strong bases capable of neutralizing acids) when they react with water .

It consists of :-

• Lithium ( Li )
• Sodium ( Na )
• Potassium ( K )
• Rubidium ( Rb )
• Cesium ( Cs )
• Francium ( Fr )

2 ) Group 17

Group 17 is called as Halogens group

Group 17 elements are called halogens because halogen is a Greek word which means 'salt producing'. They all are non-metals. They react with metals to form compounds called salts

It consists of :-

• Fluorine ( F )
• Chlorine ( Cl )
• Bromine ( Br )
• Iodine ( I )
• Astatine ( At )

3 ) Group 18

Group 18 is called as Noble Gas group

They were once called inert gases because they were thought to be completely inert—unable to form compounds. Because this configuration is extremely stable as well as symmetrical, the noble gases are very unreactive.

It consists of :-

• Helium ( He )
• Neon ( Ne )
• Argon ( Ar )
• Krypton ( Kr )
• Xenon ( Xe )
• Radon ( Rn )