Jadual berkala unsur Flashcards
1
Q
Antoine Lavosier
A
- Calssified elements into four groups
- Have similar chemical properties
- 2 groups are metals and 2 groups are non-metals
2
Q
Antoine Lavosier
A
- Calssified elements into for groups
- Have similar chemical properties
- 2 groups are metals and 2 groups are non-metals
3
Q
Johann W. Dobereiner
A
- Classified elements with similar chemical properties in group of 3-triads
- Known as Triad Law (goups of three)
4
Q
John Newlands
A
- Arranged elements in order of increasing atomic mass
- Elements with similar characteristics repeated at every eight
- Known as Law of Octaves
5
Q
Lothar Meyer
A
- Plotted a graph of the atomic volume against the relative atomic masses
- That shows the relationship between physical propeties of elements with their atomic masses
- Known as Meyer Curve
6
Q
Dmitri Mendeleev
A
- Arranged the elements in order of increasing atomic masses
- Left empty spaces in between the table to be filled by undiscovered elements
7
Q
Henry Mosely
A
- Introduced the concept of proton number of each element
- Rearranged the elements in the order of increasing proton number in Periodic Table
8
Q
Susunan unsur dalam Jadual
A
- Mengikut tertib penambahan nombor proton
- Kumpulan
- Kala
9
Q
Terangkan susunan unsur mengikut kumpulan
A
- Jalur menegak dalam jadual berkala unsur
- Terdapat 18 Jalur ( kumpulan )
- Unsur dengan elektron valens yang sama ditempatkan pada kumpulan yang sama
10
Q
Nama Kumpulan 1
A
Logam Alkali
11
Q
Nama Kumpulan 2
A
Logam alkali bumi
12
Q
Nama Kumpulan 3-12
A
Unsur peralihan
13
Q
Nama Kumpulan 17
A
Halogen / dwiatom
14
Q
Nama Kumpulan 18
A
Gas adi / Gas monoatom
15
Q
Terangkan susunan unsur mengikut kala
A
- Baris mendatar dalam jadual berkala unsur
- Terdiri daripada 7 baris melintang unsur
- unsur dalam kala yang sama - atom mempunyai bilangan bilangan petala yang diisi oleh elektron yang sama
