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प्रश्न
Give a reason
Physical properties of isotopes are different.
Give a reason for the following:
The physical properties of isotopes of the same element are not identical.
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उत्तर
Physical properties depend on atomic mass, and isotopes have different mass number, i.e. they have different number of neutrons. So, isotopes have different physical properties.
संबंधित प्रश्न
State differences between the properties of ionic compounds and covalent compounds.
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
Match the column A with Column B.
|
Column A |
Column B |
|
(i) Sodium chloride (ii) Ammonium ion (iii) Carbon tetrachloride |
Covalent bond Ionic bond Covalent and coordinate bond |
A Compound 'X' consists of only molecules. Hence 'X' will have
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?
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
State the type of bond between Y and Z and give its molecular formula.
How many atoms of each kind are present in the following molecule:
water
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
