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प्रश्न
Why do `""_17^35"CI"` and `""_17^37"CI"` have the same chemical properties? In what respect do these atoms differ?
उत्तर
Only electrons take part in chemical reactions. Chemical properties depend on the electronic configuration. Isotopes of the element Cl `""_17^35"CI"` and `""_17^37"CI"` have the same atomic number, and hence, the same configuration. So, they have the same chemical properties. These differ only in physical contents and weights because neutrons contribute to the mass of an atom. `""_17^35"CI"` and `""_17^37"CI"` have different number of neutrons 18 and 20, respectively.
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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.
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.
Why do they exist as monoatoms in molecules?
State the type of bond between Y and Z and give its molecular formula.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^31_15P}\]
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
The valency of noble gases is ______.
Write the basic concept of Kossel – Lewis theory.
How many atoms of each kind are present in the following molecule:
water
