Advertisement Remove all ads

Study the Following Table in Which Positions of Six Elements A, B, C, D, E and F Are Shown as They Are in the Modern Periodic Table - Science

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

Study the following table in which positions of six elements A, B, C, D, E and F are shown as they are in the modern periodic table:

Group→

 

Period↓

1

 

 

2

 

 

3-12

 

 

13

 

 

14

 

 

15

 

 

16

 

 

17

 

 

18

 

 

2 A         B     C
3       D E       F

On the basis of the above table, answer the following questions:-

(i) Name the element which forms only covalent compounds.

(ii) Name the element which is a metal with valency three.

(iii) Name the element which is a non-metal with valency three.

(iv) Out of D and E, which is bigger in size and why?

(v) Write the common name for the family to which the elements C and F belong.

Advertisement Remove all ads

Solution

Group→

 

Period↓

1

 

 

2

 

 

3-12

 

 

13

 

 

14

 

 

15

 

 

16

 

 

17

 

 

18

 

 

2

A

(Li)

       

B

(N)

   

C

(Ne)

3      

D

(Al)

E

(Si)

     

F

(Ar)

 

(i) Element E - Silicon forms only covalent compounds.

(ii) Aluminium (Element D) is a metal with the valency 3.

(iii) Nitrogen (Element B) is a non-metal with the valency 3.

(iv) Out of D (Aluminium) and E (Silicon), aluminium has a larger size than silicon. This is because atomic size decreases across the period.

(v) Common name for the family to which the elements C (Neon) and F (Argon) belong is 'Noble gas' or 'Inert gas'.

Concept: Periodic Properties
  Is there an error in this question or solution?

Video TutorialsVIEW ALL [2]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×