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प्रश्न
Name the particle or particles you would expect to find in :
The nucleus of an atom
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उत्तर
The nucleus of an atom : protons and neutrons
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संबंधित प्रश्न
Write the names of the elements present in the following compound.
Common salt
Name two particles found inside the nucleus. What are they collectively called ?
Name the particles which revolve around the nucleus.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
What value has been given to the mass of this reference atom ?
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
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.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
State true or false. If false, correct the statement.
An atom is electrically neutral.
Atoms of one element can be transmuted into atoms of other elements by ______
Give the salient features of “Modern atomic theory”.
Which of the following has maximum number of atoms?
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
The smallest unit of an element is ______.
What is the fundamental particle of an element?
The first scientific theory about atoms was given by J J. Thomson.
Atoms have a radius of the order ______.
