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प्रश्न
Write the full form of IUPAC.
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उत्तर
The full form of IUPAC is International Union of Pure and Applied Chemistry.
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संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
ANSWER IN DETAIL
How are isobars different from isotopes ?
Write the names of the elements present in the:-
Sodium hydroxide
Fill in the blank:
Atoms are _____
Fill in the blank
An ion with negative charge is called _______
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Which of the following statement is correct about the atom of an element ?
Find the mass of 2 moles of nitrogen atoms.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form negative ion?
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
A change in the physical state can be brought about
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Write any two observations which support the fact that atoms are divisible.
The smallest unit of an element is ______.
What is the fundamental particle of an element?
Atoms have a radius of the order ______.
