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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)
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संबंधित प्रश्न
Element X is a metal with a valency 2; Y is a non-metal with a valency 3.
(a) Write an equation to show how Y forms as ion
(b) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Give reason
Argon does not react.
Give the orbital diagram of the following:
Magnesium chloride
Identify the following reaction as either oxidation or reduction:
Zn → Zn2+ + 2e-
Five atoms are labelled V to Z
| Atoms | Mass Number | Atomic Number |
| V | 40 | 20 |
| W | 19 | 9 |
| X | 7 | 3 |
| Y | 16 | 8 |
| Z | 14 | 7 |
- Which one of these atoms
(1) contains 7 protons;
(2) has an electronic configuration 2, 7? - Write down the formula of the compound formed by atoms X and Y.
The element that would form anion by gaining electrons in a chemical reaction is ______.
The valency of noble gases is ______.
How many atoms of each kind are present in the following molecule:
water
How many electrons are required or released by each atom in carbon tetrachloride to attain the nearest noble gas configuration?
