The electronegativities (according to Pauling) of the elements in period 3 of the Periodic Table are as follows with the elements arranged in alphabetical order:
Al
Cl
Mg
Na
P
S
Si
1.5
3.0
1.2
0.9
2.1
2.5
1.8
Arrange the elements in the order in which they occur in the Periodic Table from left to right.
(The group 1 element first, followed by the group 2 element and so on, up to group 7.
Important Questions on Periodic Table, Periodic Properties and Variations of Properties
Choose the word or phrase from the brackets which correctly completes each the following statement:-
On moving from left to right in a given period, the number of shells _____ (remains the same / increases / decreases).
Choose the word or phrase from the brackets which correctly completes each the following statement:-
On moving down a group, the number of valence electrons _____(remains the same / increases / decreases).
It refers to a change in the property of elements moving from left to right across a period of the Periodic table. For this property, choose the correct answer.
The non-metallic character of the elements:
It refers to a change in the property of elements moving from left to right across a period of the Periodic table. For this property, choose the correct answer.
The electronegativity:
It refers to a change in the property of elements moving from left to right across a period of the Periodic table. For this property, choose the correct answer.
The ionisation potential:
It refers to a change in the property of elements moving from left to right across a period of the Periodic table. For this property, choose the correct answer.
The atomic size:
It refers to a change in the property of elements moving from left to right across a period of the Periodic table. For this property, choose the correct answer.
The electron affinity of the elements in groups 1 to 7:
The elements of one short of the periodic table are given below in order from left to right:
To which period do these elements belong?
