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प्रश्न
Fill in the blank:
Atoms are _____
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उत्तर
Atoms are neutral.
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संबंधित प्रश्न
Define:- Atom
Name the particles which revolve around the nucleus.
What are orbits or shells ?
Name three non-metals/radicals which have valency -1, -2, and -3.
Fill in the blank
A deficiency of electrons produces a ________ charge.
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 ?
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
Is it possible to see atoms these days ? Explain your answer.
The electron shell ______ is nearest to the nucleus.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
Define the following term with an example.
Element
K: Potassium:: C: ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
An element is composed of ______ atoms.
1 mole of Gold and Silver contain same number of atoms.
The graphite refill used is pencil is made of element called ______.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
What is the fundamental particle of an element?
