Question

collect information of first 6 elements in periodic table

Answer 1

1. Hydrogen(H)- non-metal
Atomic no. = 1
2. Helium(He)- non-metal
Atomic no. = 2
3. Lithium(Li) - metal
Atomic no. = 3
4. Beryllium(Be) - metal
Atomic no. = 4
5. Boron(B) - non-metal
Atomic no. = 5
6. Carbon(C) - non-metal
Atomic no. = 6

Answer 2

1) Hydrogen

discovered in 1766

discovered by Henry Cavendish

2) helium

Helium is a chemical element with symbol (He)and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gasgroup in the periodic table. Its boiling point is the lowest among all the elements.

3)Lithium

Lithium is a chemical element with symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the lightest metal and the lightest solid element. 

4) Beryllium

It is a chemical element with symbol Be and atomic number 4. It is a relatively rare element in the universe, usually occurring as a product of the spallation of larger atomic nuclei that have collided with cosmic rays.

5)Boron

It is a chemical element with symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in the Solar system and in the Earth's crust.

6)Carbon

It is a chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds.It belongs to group 14 of periodic table.

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