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प्रश्न
Fill in the blank
A charged particle is called an _____
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उत्तर
A charged particle is called an ion
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
Write the names of the elements present in the:-
Ammonia
Define: Mass number
State Dalton’s atomic theory.
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
Name the gas that.
Turns moist starch iodide paper blue black.
Draw the diagrams representing the atomic structures of the following: Neon
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.
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
The smaller particles found in the atom is called ______.
Define the following term with an example.
Non-metal
An element is composed of ______ atoms.
In the nucleus of `""_20"Ca"^40`, there are ______
Give the salient features of “Modern atomic theory”.
Write any two observations which support the fact that atoms are divisible.
______ is a substance that is made up of three oxygen atoms chemically combined.
The first scientific theory about atoms was given by J J. Thomson.
