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प्रश्न
Name the particle or particles you would expect to find in :
The orbit of an atom
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उत्तर
The orbit of an atom : electrons
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संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Fill in the blank:
Atoms are _____
Define: Chemical bond
Name two particles found inside the nucleus. What are they collectively called ?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
How many times is a proton heavier than an electron?
Is it possible to see atoms these days ? Explain your answer.
What is an atom ? How do atoms usually exist ?
One nm is equal to :
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
The number of atoms present in a molecule is called its ______.
The first scientific theory about atoms was given by J J. Thomson.
Atoms have a radius of the order ______.
