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Science Distinguish Between.

Inside the Atom · Maharashtra Board STD 8 (MSBSHSE - Semi English Medium). 4 questions.

Questions

Distinguish Between.

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4 questions · self-marked practice — reveal the answer and mark yourself.

Question 13 Marks
Atomic number and Atomic mass number:
Answer
Atomic numberAtomic mass number
1. The number of electrons or protons in an atom is called the atomic number.1. The sum of the number of protons and neutrons in the nucleus of an atom is called the atomic mass number.
2 All the isotopes of an element have the same atomic number.2. Different isotopes of the same element have different mass numbers.
3. The atomic number is represented by the letter Z.3. The atomic mass number is represented by the letter A.
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Question 23 Marks
Proton and Electron:
Answer
ProtonElectron
1. The proton is a positively charged particle1. The electron is a negatively charged particle.
2 Protons are present in the nucleus of an atom.2. Electrons revolve around the nucleus of the atom in specific orbits.
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Question 33 Marks
Neutron and Electron:
Answer
NeutronElectron
1. The neutron is an electrically neutral particle.1. The electron is a negatively charged particle.
2. Neutrons are present in the nucleus of an atom.2. Electrons revolve around the nucleus of the atom in specific orbits.
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Question 43 Marks
Proton and Neutron:
Answer
ProtonNeutron
1. The proton is positively charged particle1. The neutron does not have any charge.
2. In an atom, the number of protons is always equal to the number of electrons.2. In general, in an atom, the number of neutrons is not equal to the number of electrons.
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Distinguish Between. - Science STD 8 Questions - Vidyadip