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प्रश्न
Name the particles which revolve around the nucleus.
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उत्तर
Electron.
APPEARS IN
संबंधित प्रश्न
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 |
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
Define:- Molecule
Define: Chemical bond
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Define: An Atom:
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Write the full form of IUPAC.
How is the size of an atom indicated ?
Electron, proton, neutron are the types of ______ in an atom.
In what respects do the three isotopes of hydrogen differ? Give their structures.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
Define – Atom.
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
______ is the smallest particle of an element.
Atoms of one element can be transmuted into atoms of other elements by ______
The graphite refill used is pencil is made of element called ______.
Lead is also known as plumbum.
