The major portion of an atom’s mass consists of:a. neutrons and protons.b. electrons and protons.c. electrons and neutrons.d. neutrons and positrons.

Q: If atoms have mostly empty space, so how does matter stay strong? please explain

A: The empty space in an atom is the space where the nucleus (proton+neutron) is absent.

Q: 13. What were the 4 ancient elements that Empedocles described? 14. List the six ideas of John…

A:

Q: 24. What is the mass number of an isotope?

A: The chemical element consisting of the same number of electrons and protons in an atom but a…

Q: Describe Rutherford’s nuclear model of the atom. What was revolutionaryabout his model?

A: According to the Rutherford atomic model: The positively charged particles and most of the mass of…

Q: Activity type of Alumina (meaning of type I, II, III, etc.) what do the numbers mean?

A: Alumina is a granular and extremely porous form of aluminum oxide. It is available in basic, acidic…

Q: Use the atom builder interactive to determine whether each nucleus is stable or unstable.

A: For a stable nucleus the ration of numbers of neutrons and number of protons must be 1:1 for…

Q: On a sheet of paper, Illustrate the history of the atom. Indicate the scientist's name, the Time…

A:

Q: Changing the number of electrons in an atom changes the atom’s..

A: Atomic Charge

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: will be closest to which value? (A) 35 (B) 36 (C) 37 (D) 38

A: Isotopes are defined as same atoms having same atomic number but different mass number.

Q: What pattern do you notice? What's similar about most of the radioactive elements?

A: There is an obvious pattern to look for: Atomic number increases as you move right along a row.…

Q: A: Where on the periodic table, are the metals located?  B: Where on the periodic table, are the…

A: Periodic table is a table in which all of the elements are situated together. On left side there are…

Q: What is the most massive part of an atom? A. Protons B. Nucleus C. Area outside the nucleus D.…

A: We know that an atom contains three subatomic particles - electrons , protons and neutrons.…

Q: mass number for the chromium isotope with 29 neutrons Express your answer as an integer.

A: Naturally occurring chromium consists of the following four isotopes: 50Cr, 52Cr, 53Cr and 54Cr. The…

Q: What most likely explains why the chemical symbol for calcium is? A. The symbol was already used for…

A: Calcium is discovered by Humphry Davy in 1808. It belongs to group 2 of the periodic table with an…

Q: In any atom ,the atomic number is equal to the number of And the number of.

A: Atomic number is a number that can be used to uniquely identify an element. In periodic table atoms…

Q: a. Explain how atoms of different elements differ from one another.b. Explain how atoms of different…

A: a).

Q: How to get atomic mass protons electrons and neutrons? How do cation and anion work?

A: Atom consist of a heavy mass in the center which is known as nucleus. Nucleus contains protons and…

Q: A friend from your general chemistry class claims that the nucleus occupies a large volume in an…

A: The person claims that nucleus occupies a large volume in an atom. Let's see whether the claim is…

Q: A- Determine the mass of nucleons and electron by atomic mass unit?

A: mass of 1  electron = 5.45e-4 amu, mass of proton = 1 amu and mass of neutron = 1.     Now, nucleons…

Q: During a chemical reaction, atomic number_________. Select one: a. changes and then is restored b.…

A: A chemical reaction involves in change in number of electrons.

Q: The force that holds the two atoms together is the attraction of the two nuclei attraction of an…

A: Choice 4th is correct.

Q: Describe Rutherford’s nuclear theory?

A: Rutherford, in his experiment, directed high energy streams of α-particles from a radioactive source…

Q: What model of the atom views an electron as a cloud of negative charge shaving certain geometrical…

A: We need to determine the model which views the electron according to given description.

Q: 12. Using complete sentences, describe the structure of an atom of fluorine -19. Explain which…

A: Structure of fluorine =  As we can see in the picture, Sub atomic particles found in the electron…

Q: The Periodic Table: 1. Where can you find the atomic number on an element on the periodic table?

A:

Q: The electrons move around the nucleus in an _________

A: orbit

Q: what are atoms

A: The term atom is defined in step two.

Q: Select H, atomic number 1. How many stable Isotopes ofH exist?

A:

Q: what is the A, Z, E, CHARGE, MASS, # OF NUETRONS, PROTONS AND ELECTRONS OF POTASSIUM -40

A: Mass number (A) = number of protons + number of neutrons Atomic number (Z) = number of protons. E =…

Q: If penguinium (element number 119) is ever discovered, which block will it be placed in?* O P If…

A: Electron configuration can be written by nlx method  n = principal quantum number =  energy level =…

Q: Henri Becquerel discovered that unstable atoms were giving off small particles/rays. What was coming…

A: Nuclear radiation The emission of elementary particles or energy resulting from the decay of atoms.…

Q: mass number for the hafnium isotope with 106 neutrons Express your answer as an integer.

A: An atom basically consists of proton, neutrons and electrons. The protons and neutrons are present…

Q: When was the first theory about the character of the atom developed? O a. some 100 years ago O b.…

A: Atomic theory is a scientific theory of the nature of matter, which states that matter is composed…

Q: 12. Given the elements name and its mass

A: The isotopic symbol in addition to this also known as the nuclear notation allows a very simplistic…

Q: Describe the motion of the particles from A to B

A: The Time-Temperature graph has temperature on the vertical Y-axis and time on the horizontal X-axis.…

Q: Use the Atom Builder interactive to identify each nucleus as stable or unstable.

A: In the given diagrams the purple sphere represents the number of protons and the white spheres…

Q: 28. While synthesizing their ferrofluid a student is short on time and decides to pour 50 mL of…

A: Ferrofluids can defined as the colloids suspensions of magnetic nanoparticles. They tend to…

Q: If you wanted to change the atomic number in the simulation, changing the number of which particle…

A: An atom contains the subatomic particles like Electrons, Protons and Neutrons. The subatomic…

Q: atoms which has the largest mass?

A: Till now periodic table contains 118 elements

Q: If you wanted to change the mass number in the simulation, changing the number of which particle or…

A: Mass Number is considered to be the Atomic Mass of an element.

Q: Explain the relationship between an atoms number of electrons it’s relative stability

A: An atom contain negatively charged electrons and positively charged nucleus.

Q: Based on the bohr model explain the location of the lithium element on the periodic table. Why is it…

A: Answer

Q: elements will gain electrons

A:

Q: The atomic radius for radioactive radium (Ra) is Density for radioactive radium (Ra) is Melting…

A: Using the appendix for the data required. Since you have not mentioned any source from where the…

Q: In Rutherford’s gold foil experiment, which particle(s) were used? Group of answer choices α-rays…

A: Alpha rays (radiation) is the emission of an alpha particle (helium nuclei). Beta rays (radiation)…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.