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प्रश्न
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms a cation?
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उत्तर
Z = 12 i.e (2, 8, 2)
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संबंधित प्रश्न
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
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.
\[\ce{Pb -> Pb^2+ + 2e-}\]
Explain fractional atomic mass. What is the fractional mass of chlorine?
Give reason
Argon does not react.
How do atoms attain noble gas configurations?
State the type of bond between Y and Z and give its molecular formula.
Copy and complete the following table relating to the atomic structure of some elements:
| Element | Atomic Number | Mass Number | Number of protons | Number of Neutrons | Number of Electrons |
| Beryllium | 4 | 9 | |||
| Fluorine | 9 | 10 | |||
| Sodium | 12 | 11 | |||
| Aluminium | 27 | 13 | |||
| Phosphorus | 31 | 15 |
Choose the odd one out and write the reason:
How many atoms of each kind are present in the following molecule:
Chlorine
