According to modern periodic law, the physical and chemical properties of elements are periodic functions of their
Atomic number
Atomic weight
Valency
Density
Each period begins with an element having _______________ electron in the outermost shell.
1
3
5
7
Elements of the second period show resemblance in properties with elements of third period of the next group leading to a
Direct relationship
Horizontal relationship
Vertical relationship
Diagonal relationship
_______________ are weak metals and metalloids.
Halogens
Noble gases
Post transition elements
Inner transition elements
First group elements are commonly known as
Alkali metals
Lanthanides
The elements in the group number 17 are known as
Alkaline earth metals
Second group elements are commonly known as
_________ arranged elements in increasing order of atomic numbers in horizontal rows and vertical columns.
Rutherford
Mendeleev
Moseley
Newland
_____________ are good oxidising agents.
