Which Greek philosopher argued that matter is continuous in 350 B.C?

Q: Which of the following particles would attract each other? Would repel each other?

A: The answer for first question is given below. Kindly repost the other questions as separate…

Q: The discovery that uranium emitted invisible rays was made accidentally. O True O False

A: The answer is given as follows Uranium was discovered in 1789 by Martin Klaproth, a German chemist,…

Q: What is the term for the elements in the series that follows element 89?

A: the term for the element in the series that follows element 89 is actinide series.

Q: 12. Give two examples of common radioisotopes used in medicine. Be sure to write the full name of…

A: We are asked to write about isotopes that can be used in medicines

Q: How the number of electrons “owned” by an atom is determined ?

A: The number of electrons owned by an atom is determined by calculating the number of bonds and number…

Q: 3. Explain the statement , Matter and radiation have “dual nature.”

A: The matter is that substance which has its own mass and occupies some space.Light or radiation are…

Q: What is radioactive iodine?

A: Interpretation: What is radioactive iodine is to be determined.

Q: -rays consist of fast-moving electrons. A) Beta B) Gamma c) Alpha D None of these E

A:

Q: Gallium occurs naturally as 69Ga and 71Ga. Given the mass and abundance of gallium-69 (68.92 amu…

A: Given, Gallium occurs naturally as 69Ga and 71Ga and mass and abundance of gallium-69 is 68.92 amu…

Q: In atoms, protons and neutrons are found (a) only in the nucleus. (b) outside the nucleus. (c)…

A: An atom is composed of three main sub atomic particles; electrons, protons and neutrons. Out of…

Q: What Is A blue flame?

A: A blue flame has to be defined below.

Q: . Given 24/14 Si, a) Find the number of protons, electrons and neutrons in the neutral atom.

A:

Q: What are the impications of Thompson related to cathode rays?

A: J.J. Thompson proposed a plum pudding model of the atom in which he stated that it had…

Q: Alpha Decay (Emission) Beta Decay (Emission) Drag &Drop Drag &Drop Drag your selection over this box…

A:

Q: A typical diameter for a newly formed neutron star is

A: A typical diameter for a newly formed neutron star is

Q: What is the meaning of half-life of an isotope. Explain with the help of an example

A: What is the meaning of half-life of an isotope. Explain with the help of an example

Q: Which of these pertains to the process by which elements are formed within stars? A. Star formation…

A: As per bartleby guidelines I answered only first question so please don't mind.Thanks in advance.

Q: Define the term half life , of a radioactive element.

A: The time it takes for one-half of the atoms of a radioactive material/elements to disintegrate are…

Q: What was the Copernican revolution? O A. The discovery that the sun was not the center of the…

A: Copernican revolution is about the model of the solar system and was given by a polish astronomer.

Q: What is Radiation?

A: Electromagnetic radiations Electromagnetic radiations are the collection of different forms of…

Q: Explain how the cathode ray was discovered.

A: Cathode rays are the beam of electrons that are observed in vacuum tubes. They are also called…

Q: I с со I [References] VII Available Electrons: 16

A: Here we have to follow the basuc rule of Lewis dot structure and proceed according to that .

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

A: As the carbon-14 founds in the upper earth atmosphere and created when neutrons originating from…

Q: What is the mass of an assembly of 1000 electrons?

A:

Q: Marie Curie is famous for her study of:  a. hydrogen b. electricity c. radiation d. magnetism

A: Marie Curie was a Chemist and Physicist. She won nobel prize for the discovery of Polonium and…

Q: How do different isotopes of nitrogen behave similarly or differently from each other

A: There are three isotopes of nitrogen, which are nitrogen-13, nitrogen-14, and nitrogen-15. Isotopes…

Q: For Barium-138, determine the nuclear radius and volume of the Barium-138 nucleus

A: It is the size of nucleus on assuming that shape of nucleus is spherical .

Q: Determine the missing element ----   3516S---->  -10e     +     ?

A: From given nuclear reaction  Missing element in the reaction is shown below

Q: 10. In what year did Albert Einstein prove the existence of atoms Ernest Rutherford do his Gold Foil…

A: it was Albert Einstein who, starting in his epochal year of 1905, published several papers that…

Q: QUESTION 18 The first scientist introduced the quantum concept that radiation is not emitted in…

A: Quantum concept that radiation is not emitted in continues amount but in discreet bundles of energy.

Q: Why gamma rays emission cannot result in the formation of a new element

A: A gamma ray, or gamma radiation (symbol γ ) is a penetrating form of electromagnetic radiation…

Q: Create a table showing how each type of radiation affects the atomic numberand the mass number of an…

A: Given information,      Different types of radiation affects the atomic number and the mass number…

Q: When Rutherford conducted his gold foil experiment, he hypothesized that most of the alpha particles…

A: Rutherford initially thought that the atom consists of a electrons which are spread uniformly…

Q: 7. What do the study findings suggest to us about our overall question, "How should we search for…

A: For life on earth depends six elements : carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.…

Q: Which scientist said electrons move around the nucleus billions of times in one second?

A: Several theories were given and attempts were made to elaborate the actual structure of the atom.…

Q: Complete the following by placing the missing words correctly. The atomic theory was given by…

A: The atomic theory was given by  Dalton. Protons is a  subatomic particle . The atomic number gives…

Q: The element 1s22s22p63s23p64s23d104p65s2 is    a. a halogen   b. an alkali metal   c. an…

A: Since the electronic configuration of the element given is   1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2

Q: ectrons:

A:

Q: Define atomic number, atomic mass, atomic weight, isotope, and radioisotope.

A: Definition is as below-

Q: Which process creates heat, light and energy inside of stars? O A. Fission O B. Fusion O C. Half…

A: B) fussion is the correct answer

Q: Rutherford’s experiment indicated that matter was not asuniform as it appears. What part of his…

A: Rutherford’s experiment indicated that matter was not asuniform as it appears. What part of his…

Q: fusion began. The fusion of hydrogen atoms in the core of this proto- sun emitted large amount of…

A: Nuclear fusion takes place when two or more less stable lighter nuclei are combined under high…

Q: Give two examples of common radiosotopes used in medicine. Be sure to write the full name of the…

A: A) Iodine-131 i.e 13153I or I-131 Isotope is used for thyroid

Q: Draw the nuclear symbols for the three isotopes of carbon. Besides the symbol, what is common to all…

A: Isotopes are atoms of same elements which have same atomic number but different mass number. In…

Q: Which of the following is a good portable detector for identifying exposure or potential exposure to…

A: solution :       The radiation detector is used to measure different types of radiation like beta,…

Q: Atom A has a larger atomic mass than atom B. Does this mean that atom A also has a larger atomic…

A: The total number of protons present in its nucleus is the atomic mass of an atom and the sum of…

Q: 10. Why is the temperature of cosmic background radiation important to the Big Bang theory?

A: The Big Bang theory is the prevailing cosmological model explaining the existence of the observable…

Q: element? 24 25 Ⓒ26 There is not enough information to get the correct answer Submit Request Answer Q…

A: It is given that the element always looses 2 electrons to give +2 charge . Hence it is clear that…

Q: What is the mass of an electron?a) 1.67x10-24g b) 1.67x10-24 X (1/1837) c) 9.11 x10-28Kg d) 1.67…

A: Electron is a subatomic particle.

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.