Where do the transition elements appear on the periodic table?

Q: Which of the following is an acceptable atomic model for a neutral atom of carbon?

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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: Fill in the nine gaps in this table. Element symbol Zn Protons 28 Neutrons 34…

A: in the neutral atom, no. of protons= no. of electron Mass no. = No. of proton + no. of neutron

Q: Which of water, iron, ammonia, chromium, radon, and silicon are chemical compounds as opposed to…

A: We have to write the chemical compounds as opposed to elements

Q: What is atomic spectra?

A: Atomic spectra are the range of characteristic frequencies of electromagnetic radiation that are…

Q: Thorium is often cited as a much safer material for generation of power using a nuclear reactor.…

A: Solution: Yes, Thorium is often cited as a much safer material for generation of power using a…

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: 2 -Calculate the atomic number and atomic mass number for atoms with a- 4 electrons and 2 neutrons…

A: Atomic number is the number of proton present in a chemical material.The proton number is equal to…

Q: Atom Electron Cloud

A: Hi, we know that The nucleus is a collection of particles called protons ( p ), which are positively…

Q: What are the different kinds of particles in the atom's nucleus? Compare their properties with each…

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Q: F (N) 4 3 t (s) ol 1 2 3 4 5

A: Given,  Mass of the particle, m = 2.15 kg

Q: Which diagram(s) 1. I and II only O 2. I only 3. II only 4. III and IV only I II III IV est…

A: Above given diagrams from which we have to answer which is element.

Q: MODULE: From the Universe to the AtomTOPIC: Origins of the Elements (II)QUESTION: Describe the…

A: Nuclear fusion is the process which lighter nuclei combine to form larger nuclei. It is a…

Q: Elements that appear in the same column of the periodic table often share similar chemical…

A: "According to Bartleby guidelines for multiple question we can answer only one question. So, repost…

Q: The nucleus of a certain atom has a radius of 4.0 × 10^-15 m. An electron orbits the nucleus at a…

A: Given data The radius of the nucleus is rn = 4 x 10-15 m The orbiting radius of the electron is Ro =…

Q: The half-life of an element is 20 years. In how many years will there be 12.5% of the initial…

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Q: Fill in the nine gaps in this table. Element symbol     Be     Protons   6   Neutrons   8…

A: Beryllium is denoted as Be. Carbon is denoted as C. Sodium is denoted as Na.

Q: An electron in a hydrogen atom absorbs a photon and jumps from an orbit to another orbit. Which of…

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Q: The disintegration constant of a radioactive element is 0.0023 per day. Calculate the half-life and…

A: Given: The disintegration constant is 0.0023 per day.

Q: A radioactive element has an original mass of 150 grams. How much would be left in the parent atom…

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

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Q: The activity of a radioactive element falls from 600 s1 to 500 s1 in 40 minutes. The half-life of…

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Q: What element has the lightest atoms?

A: Hydrogen has the lightest atoms. Its atomic number is 1 and its atomic mass is 1.00794 amu. It has…

Q: One cubic meter of atomic hydrogen at 0°C at atmospheric pressure contains approximately 2.70 x 1025…

A: Given that: No=2.70×1025 atoms∆E=10.2 eV=10.2×1.6×10-19 J

Q: Derive the expression for the particle speed entering the magnetic field.  Calculate the speed…

A: (1)   Write the expression for the kinetic energy, and solve for the expression for the partivle…

Q: The half-life of Unobtanium-118 is 3 days. How many days pass for 800 grams of this element to be…

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Q: Explain the structure of the atom in general

A: Solution

Q: What will happen when an electron returns to its original energy level?

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Q: A particular atom contains 29 electrons, 34 neutrons and 29 protons. Which element is this and tell…

A: A particular atom has 29 electrons, 34 neutrons and 29 protons. The atom is copper.

Q: When was element Plutonium discovered? O 1935 O 1943 O 1941 O 1940

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Q: The nucleus of an atom emits a high energy electromagnetic wave. This nucleus has probably changed…

A: When a nucleus emmits a radiation of high energy electromagnetic wave then then it transformers to a…

Q: Elements that appear in the same column of the periodic table often share similar chemical…

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

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Q: What is the full story of how light elements formed?

A: What is the full story of how light elements formed?

Q: Which of the following is equivalent to 1 a.m.u? [A] 1/12th of the mass of the helium atom [B]…

A: One of the most used unit for mass of atomic scale substances is known as a.m.u or atomic mass unit.…

Q: Why does hydrogen emit certain wavelengths of light when electricity is passed through a sample…

A: SOlution:

Q: Using the periodic table, Terry draws a model of a helium atom and a hydrogen atom. Match the number…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The value of A in the element symbol below determines the isotope of the atom.

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Q: Sketch a model of an atom, showing the positions of the subatomic particles protons, neutrons, and…

A: Protons p+ , neutrons n0 and electrons e- are subatomic particles.  p+have + ve charge. e-s have -ve…

Q: Element symbol     O     Protons   20   Neutrons   20   Electrons     14 Mass number 16   28

A: Oxygen has atomic number 8 and it's symbol is O.

Q: What gas was "emanation" from thorium, discovered by Ernest Rutherford? radium radon oxygen O xenon

A: During the radioactive process of Thorium  the 220Rn is the natural decay product of the most stable…

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: