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प्रश्न
Fill in the blank
If an atom gains an electron, it is called an _______
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उत्तर
If an atom gains an electron, it is called an anion
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संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
WRITE SHORT ANSWER
Name three inert gases.
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
ANSWER IN DETAIL
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Define:- Atom
Define:- Molecule
Write the names of `("NH"_4)_2"SO"_4` compounds:
Fill in the blank
An ion with negative charge is called _______
Name the particles which revolve around the nucleus.
What are orbits or shells ?
What does the word ‘atom’ mean?
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
What value has been given to the mass of this reference atom ?
State two observations which show that atom is not indivisible.
Which of the following statement is correct about the atom of an element ?
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Which of the following has maximum number of atoms?
Lead is also known as plumbum.
