Advertisements
Advertisements
Question
Choose the most appropriate answer from the following list of oxides which fit the description.
A basic oxide.
Options
SO2
SiO2
Al2O3
CO
Na2O
Solution
Na2O
Explanation:
\[\ce{Na2O + H2O -> 2NaOH}\]
APPEARS IN
RELATED QUESTIONS
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.
How many groups and periods are there in the modern periodic table?
How do the atomic size and metallic character of elements vary as we move :-
(a) down a group and
(b) from left to right in a period
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
What happens to the metallic character of the elements as we go down in a group of the periodic table?
How does Nature of oxides of elements change on going from left to right in a period of the periodic table?
Give examples in support of your answer.
Name the elements in period 1.
Copy and complete the following sentence choosing the correct word or words from those given below, at the end of the sentence:
The similarities in the properties of elements belonging to a group are because they have the same ______
Based on the group valency of element write the molecular formula of the following compound giving justification:
Compound formed when an element A of group 2 combines with an element B of group seventeen.
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 having electronic configuration 2, 6.
