How many of these particles are there in a neutral atom of U 92 238 Electrons.

There are 92 electrons present in the neutral atom of U 92 238 . Natural Decay Series of Uranium- 238 Uranium has an atomic number of 92 which means there are 92 protons and 92 electrons in the atomic structure. A much bigger atom with 92 protons in its nucleus is a uranium atom, because uranium is element 92 .

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Upper Secondary: IGCSE

IMPORTANT

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Ernest Rutherford devised an experiment in which alpha particles were directed at a thin gold foil. The results of this experiment showed that every atom has a nucleus, and the plum pudding model of the atom had to be discarded. Draw a diagram to show how an alpha particle could be scattered backward by a gold atom, towards the source from which it came.

Important Questions on The Nuclear Atom

HARD

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 9

Ernest Rutherford devised an experiment in which alpha particles were directed at a thin gold foil. The results of this experiment showed that every atom has a nucleus, and the plum pudding model of the atom had to be discarded. Explain why most alpha particles passed straight through the gold foil.

MEDIUM

Upper Secondary: IGCSE

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Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 10

The diagram represents a neutral lithium atom. All the particles in the atom are shown on the diagram. Use the diagram to help you answer the following question. How many electrons does this atom have?
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HARD

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 10

The diagram represents a neutral lithium atom. All the particles in the atom are shown on the diagram. Use the diagram to help you answer the following question. What is the value of the proton number of this atom?
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HARD

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 10

The diagram represents a neutral lithium atom. All the particles in the atom are shown on the diagram. Use the diagram to help you answer the following question. How many neutrons does the atom have?
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HARD

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 10

HARD

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 10

Copy the diagram below, replacing the boxes with appropriate numbers, to represent this atom of lithium in nuclide notation.
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HARD

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 11

The charges on the particles in an atom may be represented by $0$ or $+ 1$ or $+ 1$ ,
The masses of the particles in an atom may be represented by $0$ or $m$ or $2000 m$ .
Using these choices, copy and complete the table.

Particle	Charge	Mass
Electron	$- 1$	$m$
Neutron
Proton

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 22 - The Nuclear Atom>End-of-chapter questions>Q 11

How many of these particles are there in a neutral atom of

{}_{92}^{238}U

Electrons.

Important Questions on The Nuclear Atom

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