Advertisements
Advertisements
प्रश्न
Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
उत्तर
(a) For element X :
X → X2 + 2e-
For element Y :
Y + 3e- → Y3-
(b) Since Y is a diatomic gas hence it combines with X as :
3X + Y2 → X3Y2
APPEARS IN
संबंधित प्रश्न
Five atoms are labelled from A to E.
| Atoms | Mass No. | Atomic No. |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
(a) Which one of these atoms:
(i) contains 7 protons,
(ii) has an electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) predict which are: (i) metals, (ii) non-metals?
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2, 8, 1 |
2, 8, 7 |
2, 5 |
1 |
Answer the following question based on the table above:
What is the formula of the compound formed between W and X.
State the following is a reduction reaction or oxidation reaction.
\[\ce{Cu -> Cu^2+}\]
How are X-rays produced?
Give reason
Argon does not react.
State the type of bond between Y and Z and give its molecular formula.
Identify the following reaction as either oxidation or reduction:
Zn → Zn2+ + 2e-
Spot the error/correct the wrong statement:
In the formation of compounds, the inner shell electrons of an atom involved in bonding.
How many electrons are required or released by each atom in water molecule to attain the nearest noble gas configuration?
