Chapter 2
Periodic classification of
ELEMENTS
- Parth Momaya
,1. Hydrogen (H) Hi 11. Sodium (Na) Na
2. Helium (He) Hello 12. Magnesium (Mg) Mango
3. Lithium (Li) Listen 13. Aluminium (Al) Allu
4. Beryllium (Be) Be 14. Silicon (Si) Se
5. Boron (B) B 15. Phosphorus (P) Pepsi
6. Carbon (C) C 16. Sulphur (S) Soda
7. Nitrogen (N) News 17. Chlorine (Cl) Cola
8. Oxygen (O) On 18. Argon (Ar) Aur
9. Fluorine (F) Friday 19. Potassium (K) Kaju
10. Neon (Ne) Night 20. Calcium (Ca) catli
s - block
Group 1 Group 2
Hydrogen (H) H Beryllium (Be) Beta
Lithium (Li) Li Magnesium (Mg) Mange
Sodium (Na) Na Calcium (Ca) Car
Potassium (K) K Strontium (Sr) Scooter
Rubidium (Rb) Rb Barium (Ba) Baap
Cesium (Cs) Cs Radium (Ra) Razi
Francium (Fr) Farar
, p - block
18
13 14 15 16 17 He
B C N O F Ne
Al Si P S Cl Ar
Ga Ge As Se Br Kr
In Sn Sb Te I Xe
Tl Pb Bi Po At Rn
13. B Al Gaya Insaan Takla
14. Come See Girls in Sunday Pub
15. NZ Pakistan Australia Sab Bhikari
16. O S Se Tel Po
17. First Class Biryani I Ate
18. He Narayan Arjun Kare Xerox Ramayan
, 1. Rearrange the columns 2 and 3 so as to match with the column 1.
Column 1 Column 2 Column 3
Triad Average of the first and the third Dobereiner
atomic mass
Octave Properties of the eighth element Newlands
similar to the first
Atomic Number Positive charge on the nucleus Moseley
Period Sequential change in molecular Mendeleev
formulae
Nucleus Concentrated mass and positive Rutherford
charge
Electron Lightest and negatively charged Thomson
particle in all the atoms
2. Choose the correct option and rewrite the statement.
a. The number of electrons in the outermost shell of alkali metals is 1.
(i) 1 (ii) 2 (iii) 3 (iv) 7
b. Alkaline earth metals have valency 2. This means that their position in
the modern periodic table is in Group 2.
(i) Group 2 (ii) Group 16 (iii) Period 2 (iv) d-block
Periodic classification of
ELEMENTS
- Parth Momaya
,1. Hydrogen (H) Hi 11. Sodium (Na) Na
2. Helium (He) Hello 12. Magnesium (Mg) Mango
3. Lithium (Li) Listen 13. Aluminium (Al) Allu
4. Beryllium (Be) Be 14. Silicon (Si) Se
5. Boron (B) B 15. Phosphorus (P) Pepsi
6. Carbon (C) C 16. Sulphur (S) Soda
7. Nitrogen (N) News 17. Chlorine (Cl) Cola
8. Oxygen (O) On 18. Argon (Ar) Aur
9. Fluorine (F) Friday 19. Potassium (K) Kaju
10. Neon (Ne) Night 20. Calcium (Ca) catli
s - block
Group 1 Group 2
Hydrogen (H) H Beryllium (Be) Beta
Lithium (Li) Li Magnesium (Mg) Mange
Sodium (Na) Na Calcium (Ca) Car
Potassium (K) K Strontium (Sr) Scooter
Rubidium (Rb) Rb Barium (Ba) Baap
Cesium (Cs) Cs Radium (Ra) Razi
Francium (Fr) Farar
, p - block
18
13 14 15 16 17 He
B C N O F Ne
Al Si P S Cl Ar
Ga Ge As Se Br Kr
In Sn Sb Te I Xe
Tl Pb Bi Po At Rn
13. B Al Gaya Insaan Takla
14. Come See Girls in Sunday Pub
15. NZ Pakistan Australia Sab Bhikari
16. O S Se Tel Po
17. First Class Biryani I Ate
18. He Narayan Arjun Kare Xerox Ramayan
, 1. Rearrange the columns 2 and 3 so as to match with the column 1.
Column 1 Column 2 Column 3
Triad Average of the first and the third Dobereiner
atomic mass
Octave Properties of the eighth element Newlands
similar to the first
Atomic Number Positive charge on the nucleus Moseley
Period Sequential change in molecular Mendeleev
formulae
Nucleus Concentrated mass and positive Rutherford
charge
Electron Lightest and negatively charged Thomson
particle in all the atoms
2. Choose the correct option and rewrite the statement.
a. The number of electrons in the outermost shell of alkali metals is 1.
(i) 1 (ii) 2 (iii) 3 (iv) 7
b. Alkaline earth metals have valency 2. This means that their position in
the modern periodic table is in Group 2.
(i) Group 2 (ii) Group 16 (iii) Period 2 (iv) d-block
