What are the different kinds of particles in the atom's nucleus? Compare their properties with each other and with those of an electron.

Q: In terms of wavelength, what is the smallest orbit that an electron can have about the atomic…

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Q: Why doesn’t the repulsive electric force of protons in the atomic nucleus cause the protons to fly…

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Q: Name the atom whose frequency is used to define a second

A: The radiation produced by transition between the two hyperfine ground state of caesium has a…

Q: 8. Part 1: Label the parts of this atom (nucleus, protons, electrons, neutrons) Part 2: Answer…

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Q: Choose the BEST answer to the following. When an element ejects a beta particle, the atomic number…

A: Answer:bi,e increases by 1.

Q: What influence does the strong nuclear force have on the electrons in an atom? It attracts them…

A: Strong nuclear force is the binding force that acts as a glue holding the protons and the neutrons…

Q: Prove that alpha radiation is the emission of a helium nucleus.

A: Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha…

Q: What is the force between two protons with a charge of 1.6 × 10^-19 C if they are 5 × 10^-15 m apart…

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Q: What happens if you place a neutron and an electron close together?

A: We will answer the question using the fact that same charges repel and opposite charges attract.

Q: Two protons in an atomic nucleus repel each other, but they are also attracted to each other.…

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Q: If the size of a nucleus (in the range of 10-15 to 10-14 m) is scaled up to the tip of a sharp pin,…

A: The actual size of the nucleus is, 10-15m.The apparent size of the nucleus is, 10-5mThen, the…

Q: 34. In the alpha- scattering experiment very few alpha particles were deflected through angles…

A: Option B is the right answer  Statements 2 and 3 is right for alpha particle scattering

Q: Which of the following diagrams best represents the size of the atomic nucleus relative to the size…

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Q: Why do different isotopes of the same element have the same chemical properties?

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Q: Using the standard model, analyse the roles of both forces and particles in the current…

A: The universe is formed from some building blocks which are governed by the four fundamental forces…

Q: Which has more potential energy relative to the nucleus: electrons in inner electron shells or…

A: Potential energy is inversely proportional to the distance from nucleus and where the force of…

Q: composite particles or matter?

A: The Elementary  and composite particles are held together by a very strong nuclear force called…

Q: The most common oxygen isotope is °0, but the rarer isotopes O and 10 of this element also exist in…

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Q: What is the atomic number of a given element is equivalent to ?

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Q: check all that are found in the nucleus of an atom neutron proton electron

A: The nucleus of an atom is positively charged. An atom consist of electron proton and neutrons so the…

Q: What do all isotopes of the same element have in common? How do they differ?

A: The isotopes are the elements which are same atomic number and different mass number.

Q: How does one isotope differ from the another?

A: In an isotope, the number of protons is always equal to the number of electrons, but the number of…

Q: Why are spectral lines often referred to as “atomic fingerprints”?

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Q: What element results if you add a pair of protons gto the nucleus of mercury?

A: Number of protons n in an element of mercury is 80

Q: Explain effect an electric field on alpha particles , beta particles and gamma ray?

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Q: Do electron have the the most mass in the atom ?

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Q: What is atomic mass unit? Calculate the energy equivalent to 1 a.m.u in joule and electron volt.

A: Atomic mass unit is defined as mass equivalent to 1/12 th mass of an atom of Carbon-12. And…

Q: What forces hold the nucleus together? And how do those forces compare in magnitude to the…

A: The nucleus of an atom is held together by the strong nuclear force. This force is the strongest…

Q: Explain the ionization of radiation in an atom.

A: When radiation incident on substance, electron eject from orbit of substance due to energy of…

Q: established

A: An atomic nucleus gives off a particle to become stable. The atoms become unstable due to the excess…

Q: Who discover X-rays? O J.J.Thompson O H. Wells W.Roentgen O F.Soddy O O

A: The discovery of X-Rays is credited to W. Roentgen. He accidently discovered X-Rays while trying to…

Q: Choose the BEST answer to the following. From quantum mechanics we learn that a radioactive nucleus…

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Q: Who developed liquid drop-model of the nucleus? Ernest Rutherford Marie Curie Enrico Fermi O Niels…

A: In the liquid drop model, the nucleus is considered to be a drop of incompressible fluid held by the…

Q: What does the atomic number of an element tell us about it

A: Explanation: Atomic number of an element tells that the number of protons in the nucleus of the…

Q: What are isotopes? Why do different isotopes of the same element have similar chemistries?

A: The number of protons present in the nucleus of an atom is called atomic number. It is denoted by Z.…

Q: Are most of the atoms around us younger or older than the Sun?

A: Step 1 Sun is a star at the center of our universe. It is a sphere of hot plasma. Right now it is on…

Q: Where do the transition elements appear on the periodic table?

A: There are 18 groups and 7 periods in the periodic table in which all elements are arranged in order…