Which of the following is from the noble gas family? ок Хе F Cr

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

A:

Q: definaton of homogeneous nucleation

A: Nucleation is the first step in the formation of either a new thermodynamic phase or a new…

Q: ind the length of a side of a cube having a mass of 1.0 kg and the density of nuclear matter, taking…

A: Given,  mass, m = 1.0 kg density = 23 kg/m3 Volume, a3 length of side, a…

Q: Convert the following Binary number (1.10010) to Octal * O 1.025 O 2.364 O 5.32 O 1.23 1.44

A: Solution

Q: Order the following elements by increasing atomic radius according to what you expect from periodic…

A: In the periodic table as we move from left to right the atomic radius decreases.Arsenic(As)is a…

Q: why is it easier to use neutrons to synthesize new elements compared to alpha particles

A: Neutrons are neutral in charge which is more efficient to create new elements due to its stabilizes.…

Q: What is the relative charge and relative mass of each subatomic particle

A: sub atomic particle

Q: Isotopes of an element contain: A. the same number of protons but different number of neutrons B.…

A: The nucleus of an element consists of protons and neutrons. The electrons don't reside inside the…

Q: What are the characteristics of the three subatomic particles?

A: Protons, neutrons and electrons are the three main subatomic particles.

Q: Where were the atoms that make up a newborn infant “manufactured”?

A:

Q: The atomic nucleus is most often made up of

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Q: Why don't electrons in the atom enter the nucleus?

A: In electron capture, an atomic electron is absorbed by a proton in the nucleus, turning the proton…

Q: Choose the BEST answer to the following. The neutrons in an atom are normally found (a) inside the…

A: Answer: ai,e  inside the nucleus.

Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A:

Q: Compared with the energy it takes to separate oxygen and hydrogen from water, how much energy is…

A: According to the principle of conservation of energy, the total energy is always conserved.

Q: What is the most abundant element in the known universe?

A: There are 114 known elements in the universe.

Q: • The element copper has naturally occurring isotopes of 63 (62.93amu) and 65 (64.93amu). With an…

A:

Q: ス 3alte e Valt rass 2134

A: (a)Find the equivalent resistance of the given circuit for first path.

Q: Fill out the table below. Atomic Mass Number of Number of Name Symbol Charge number Number neutrons…

A: The atomic symbol  is of the form XZA, where X is the symbolic representation of the element, A is…

Q: _7. crystalline hard condensed matter phases _8. finite & infinite-dimensional vector spaces _9.…

A:

Q: Select one or more: a. The model suggested presence of electrons orbiting the heavy nucleus. b. The…

A: Bohr model suggested presence of electrons orbiting the heavy nucleus in that orbit which is…

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: Energy stored in the nuclei of atoms can be used to generate electricity. O True O False

A: Nuclear energy is the energy in the nucleus, or core, of an atom.  Atoms are tiny units that make up…

Q: This subatomic particle is what gves the nucleus an overall positive charge. This is the space…

A:

Q: Exactly what is a positively charged hydrogen atom?

A: A positively charged hydrogen atom

Q: 14. When an a-particle collides with a stationary lithium nucleus, the following nuclear reaction…

A: Mass of alpha particle Mα=4.0026 u Mass of lithium MLi=6.941 u Q value of the reaction E=-2.87 MeV…

Q: Calculate the reactions of the structure shown in figure. El is constant. 4.0 m 2.0 m Half circle

A: Given Frame,

Q: Some people say that all things are possible. Is it at all possible for a common hydrogen nucleus to…

A: Hydrogen nucleus has only a single proton. An alpha particle is a helium nucleus and hence has two…

Q: Part 3 Atomic Cakulatinns: Complete the chart belowe. 10. Hof p #of n # of e Element Atomic # Mass #…

A: Atomic # - No. of protons or electrons Mass # - No. of protons + No. of neutrons

Q: 12. The half-life of Calcium-47 is 3.91 x 105 seconds. A sample contains 4.11 x 1016 nuclei. How…

A: GivenHalf life of calcium-47, T1/2=3.91×105 sInitially the amount of nuclie, No=4.11×1016

Q: Oxygen and hydrogen atoms combine to form water. If the nuclei in a water molecule were fused, what…

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Q: radioactive substance is known to have a half-life of 78 years. Calculate the number of years it…

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Q: Boron has two naturally occurring isotopes, boron-10, and boron-11. Boron-10 has a mass of 10.0129…

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Q: Is there any chance this can be resolved on paper?

A:

Q: Sketch a diagram of a boron atom, which has five protons and six neutrons in its nucleus

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Q: Choose the BEST answer to the following. When an element ejects an alpha particle, the mass number…

A: Generally nuclear decay changes the number of protons in the nucleus of an atom and changes the…

Q: Calculate the energy released in the reaction shown below. Li+ 'n → He + }H 2

A: given,   released energy=[mass of reactant - mass of products]*c^2

Q: Choose the best answer to the following: If two protons and two neutrons are removed from the…

A: Step 1Proton and neutron are respectively represented as

Q: The value of ( xk). (kxi) is: O √3 O-1 00 O 3 O +1

A:

Q: Just after an alpha particle leaves the nucleus, would you expect it to speed up? Defend your…

A: An alpha particle is emitted by a nucleus

Q: What is –40 ºF in ºC? in K?

A:

Q: What is the essential role of atomic number in creating new elements?

A: Atomic number is total number of electrons in atom. Most of the properties depend on valency of…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: