elements in the periodic table

1. PERIODIC TABLE

2. PERIODIC TABLE

3. • THE PERIODIC TABLE IS A TABULAR
ARRANGEMENT OF THE CHEMICAL
ELEMENTS, ORGANISED ON THE BASIS
OF THEIR ATOMIC NUMBERS,
ELECTRONIC CONFIGURATION AND
RECURRING CHEMICAL PROPERTIES
• IT CONSIST OF 118 ELEMENTS
• FATHER OF PERIODIC TABLE
- MENDLEEV

4. • ELEMENTS OF THE PERIODIC TABLE IS
DIVIDED INTO
a)METALS
b)NON-METALS
c) METTALOIDS

6. PROPERTIES OF METALS
• METALS ARE GOOD CONDUCTORS OF
HEAT AND ELECTRICITY
• METALS ARE SHINY
• METALS ARE DUCTILE
• METALS ARE MALLEABLE
• A CHEMICAL PROPERT OF METAL IS ITS
REACTION WITH RESULTS IN CORROSION

7. PROPERTIES OF NON-METALS
• Non-metals are poor conductors of
heat and electricity.
• Non-metals are not ductile or
malleable.
• Solid non-metals are brittle and
break easily.
• They are dull.
•Many non-metals are gases.

8. PROPERTIES OF METALLOIDS
•Metalloids (metal-like) have
properties of both metals and non-metals.
• They are solids that can be shiny or
dull.
• They conduct heat and electricity
better than non-metals but not as
well as metals.
• They are ductile and malleable.

9. REPRESENTATION IN SQUARES
• Name: Hydrogen
• Symbol: H
• Atomic Number: 1
• Atomic Mass: 1.00794 amu
• No: of valence electron: 1

10. COMMON ELEMENTS AND
SYMBOLS
•HYROGEN- H
•OXYGEN- O
•NITROGEN- N
•CARBON- C
•SODIUM- Na
•SULPHUR- S
•CHLORINE- Cl

11. ATOMIC NUMBER AND
ATOMIC MASS
• ATOMIC NUMBER REFERS TO NO:
OF PROTONS
• NO TWO ELEMENTS HAVE SAME
ATOMIC NO:
• ATOMIC MASS REFERS TO THE
WEIGHT OF THE ATOM

12. GROUPS OR FAMILIES
• COLUMNS OF ELEMENTS ARE CALLED
GROUPS
• THERE ARE 18 GROUPS
• ELEMENTS IN EACH GROUP HAVE
SIMILAR BUT NOT IDENTICAL PROPERTIES
• ALL ELEMENTS IN A FAMILY HAVE THE
SAME NO: OF VALENCE ELECTRON

13. PERIOD
• ROWS OF ELEMENTS ARE CALLED A
PERIOD
• THE ELEMENTS IN A PERIOD ARE NOT
ALIKE IN PROPERTIES
• THE PROPERTIES CHANGE GREATLY
ACROSS EVEN GIVEN ROW

14. THANK YOU