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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?
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
What does an atom consist of ? Explain.
Define: Covalent bond
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
What is an atom ? How do atoms usually exist ?
Find the mass of 2 moles of nitrogen atoms.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Electron, proton, neutron are the types of ______ in an atom.
The electron shell ______ is nearest to the nucleus.
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
What is the contribution of the following in atomic structure?
Maharshi Kanada
The smallest particle of matter that can exist by itself is ______.
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.
The volume occupied by 4.4 g of CO2 at S.T.P ______
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
Atoms have a radius of the order ______.
