The first scientist who was able to separate two isotopes of neon was O Henry Noseley Marie Curie Francis Aston Leo Scillard

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: 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 are the positively charged particles of an atom called? A. ELECTRONS B. ELECTRON CLOUD C.…

A: To determine Positively charged particles of an atom

Q: To discover if a cancer has metastasized, an oncologist might request a Positron- emission…

A: SOlution: to find what type of reaction is occuring when the PET scanner is used.

Q: Define atomic number.

A: The atomic number of an element in periodic table  is the number of protons in the nucleus of an…

Q: Bohr magneton is defined as magnetic moment of an electron orbital motion magnetic moment of an…

A: Bohr magneton

Q: What does the atomic number of an element tell you about the element?

A: Step 1Atomic number is the basic property of the element, it helps one identify the element. Atomic…

Q: An alpha particle is: 'n Alfa-deeltjie is: OA. a helium atom with two electrons removed / 'n…

A: 19) An alpha particle is produced from a radioactive nuclei during a radioactive decay. Two protons…

Q: Element symbol Mg Protons 10 Neutrons 12 Electrons 11 Mass number 24 23 00

A: A table with some missing values is given Let's find those missing values

Q: Thorium and radium used to be put in face creams back in the 1900s. Why is this no longer done?

A: Thorium and Radium are radioactive elements.It pose as a great health hazard.It has a lot of harmful…

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

A:

Q: Number of Electrons Atomic Number Element name Element Symbol

A: Done

Q: Will electrons collide with the nucleus due to their attraction. Give answer with reason

A: No, electrons will not collide with the nucleus due to their attraction. The reason of this…

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

A:

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

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

Q: Marie and Pierre Curie were both winners of the Nobel Prize in physics. This prize is one of the…

A: Curie's family is known for their scientific  achievements and their Nobel prizes are confirmation…

Q: QUESTION 7 was the first to make a theoretical model of the nucleus using the idea of a liquid drop.…

A: answer :-  Niels bohr was the first to make a theoretical model of the nucleus using the idea of a…

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: pass

A: Half-life is used to measure the decay rate of the radioactive isotope. One half-life is said to…

Q: What is another way to write the isotope listed below? 239 Pu 94 Plutonium-333 Plutonium-145…

A: Definition of isopotes -  Two form of same element with different number of neutrons but same 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: Which element is the primary fuel used to generate electricity using nuclear energy? O coal O…

A: Uranium is the primary fuel which is most widely used to produce nuclear energy.

Q: The atomic number of an element is known to be 32. Write the four quantum numbers of all of the…

A: The atomic number of Germanium is 32. Its electronic configuration is as follows : [Ar]3d104s24p2…

Q: how much charge is present in a container havinf 1 atom of hellium

A: SOlution:

Q: For an electrically neutral atom, the number of protons in the nucleus of is equal to the number of…

A: The proton are positively charged and electrons are negatively charge with the equal in magnitude of…

Q: To say whether an atom is an isotope of an element, the number of protons and electrons must be…

A: Required : The correct option.

Q: How many neutrons are in the nucleus of the atom 17 9 F

A: Given mass number is 17. Given atomic number is 9.

Q: In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the…

A: An alpha particle is a radioactive particle that has an atomic number of 2 and a mass number of 4.…

Q: Who was the leader of team of scientists and engineers that built first man-made nuclear reactor?…

A: The first man made controlled nuclear reactor was made in the university of Chicago in 1942 , under…

Q: Fill in the nine gaps in this table. Element symbol K 19 7 Protons 16 Neutrons 20 18 16 Electrons 19…

A: Mass number is the total number of protons and neutrons in the nucleus.

Q: There is a safe level of radioactive carbon dioxide on earth and inside your body because of: a. UV…

A:

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: John Dalton's argument that atom exist was based on his discovery of the new elements O the law of…

A: Correct option is (b) i e the law of multiple proportions .

Q: Write the appropriate symbol (with A, Z and the element symbol) for an yttrium isotope that has 39…

A:

Q: Select statements that apply to the Rutherford model. Select one or more: a. The model suggested…

A:

Q: Write true if the statement is true. If not, write false and change the underlined word to make the…

A: Answer:-  (1)Gamma rays are ionizing :- True  Because  There are three main kinds of ionising…

Q: The electrical interaction between the nucleus and the electron is a force of

A: Attraction

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…

Q: Energy stored in the nucleus of an atom is called: A) Nuclear energy B) Atomic energy C) Potential…

A:

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: