Notifications
Clear all
Atomic number of a few elements are given below. 10, 20, 7, 14 (a) Identify the elements. (b) Identify the Group number of these elements in the Periodic Table.
0
22/11/2020 5:23 pm
Topic starter

Atomic number of a few elements are given below.
10, 20, 7, 14
(a) Identify the elements.
(b) Identify the Group number of these elements in the Periodic Table.
(c) Identify the Periods of these elements in the Periodic Table.
(d) What would be the electronic configuration for each of these elements?
(e) Determine the valency of these elements.
Answer
Add a comment
Add a comment
Topic Tags
1 Answer
Forum Jump:
Related Topics
-
A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertiliser.
3 years ago
-
The non-metal A is an important constituent of our food and most of the fuels around us. A forms two oxides B and C. Oxide B is poisonous whereas oxide C causes global warming.
3 years ago
-
Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing electronic structure, how either one of the two metals reacts with a halogen.
3 years ago
-
Atoms of eight elements A, B, C, D, E, F, G, and H have the same number of electron shells but different number of electrons in their outermost shells. It was found that elements A and G combine to form an ionic compound. This ionic compound is added...
3 years ago
-
Find the neutral atom in the periodic table which has the same number of electrons as K^+ and Cl. What is this number?
3 years ago
Topic Tags:
class 10 (8819)
,
cbse (15084)
,
ncert exemplar (1417)
,
periodic classification (299)
,
elements (299)
,
Forum Information
- 321 Forums
- 27.3 K Topics
- 53.8 K Posts
- 2 Online
- 12.4 K Members
Our newest member: Stripchat
Forum Icons:
Forum contains no unread posts
Forum contains unread posts
Topic Icons:
Not Replied
Replied
Active
Hot
Sticky
Unapproved
Solved
Private
Closed