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प्रश्न
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
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उत्तर
Y = 9 i.e (2, 7)
संबंधित प्रश्न
Match the atomic number 4, 8, 14, 15 and 19 with each of the following:
(a) A solid non-metal of valelncy 3.
(b) A gas of valency 2.
(c) A metal of valency 1.
(d) A non-metal of valency 4
Give electron dot diagram of the following:
methane
How does the Modern atomic theory contradict and correlate with Dalton's atomic theory?
Give reason
Argon does not react.
Give the orbital diagram of the following:
Methane
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
How do atoms attain Noble gas electronic configuration?
Complete the table give below.
| Element |
Atomic number |
Electron distribution | Valence electrons | Lewis dot structure |
| Lithium | 3 | 1s22s1 | ||
| Boron | 5 | 1s22s22p1 | ||
| Oxygen | 8 | 1s22s22p4 |
Choose the odd one out and write the reason:
The one which is composed of all the three kinds of bond.[ionic, covalent and coordinate bond]
