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प्रश्न
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
विकल्प
17
11
18
20
उत्तर
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is 17.
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संबंधित 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.
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.
How many atoms of each kind are present in the following molecule:
Calcium oxide
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of oxidizing agent.
An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to continue with chlorine and sulfur separately.
Write down the electronic configuration of
(i) chlorine atom (ii) chlorine ion
State the type of bond between Y and Z and give its molecular formula.
Give the orbital diagram of the following:
Hydrogen chloride
Identify the following reaction as either oxidation or reduction:
Zn → Zn2+ + 2e-
Complete the following table:
| Atoms | Atomic number | Electron distribution | |
| 1. | O | 8 | ______ |
| 2. | N | ______ | ______ |
| 3. | ______ | 17 | ______ |
| 4. | ______ | ______ | 2,8,2 |
