Models neutrons can are be used to show the structure of an atom, The protons and clustered aroUnd the in the nucleus of the atom while electrons spin nucleus in an electron cloud. What element is shown in the model? A Aluminum—it has 13 protons. B Cobalt—it has 27 protons and neutrons altogether. C Lithium—it has 3 valence electrons. D Silicon—it has 14 neutrons.

Q: What is the approximate diameter ofthe nucleus in units of pm?

A: Given diameter of nucleus = 10-4 A. 1A = 10-10m. 10-4 A = 10-14 m.

Q: Identify each the following elements. Give the number of protons and neutrons. 32 а. 164 a. 18X The…

A: a. 32X16 Atomic number is = 16  And mass number = 32  So the element is => Sulfur, S  Atomic…

Q: D. Isotopes and Atomic iMass Reading list 1 Nuclear Symbol Protons Neutrons Electrons 107 47Ag Ag…

A:

Q: A Se atom has a mass number of 75. Determine the number of neutrons, protons, and electrons in this…

A: The given element is = Se (selenium) The mass number of Se is = 75 We know that the atomic number of…

Q: Could you please fill in the chart?

A: For a neutral atom, number of protons = number of electrons =  atomic number (Z) mass number(A) =…

Q: The isotope of an unknown element, X, has a mass number of 79. The most stable ion of this isotope…

A: The question is based on the concept of atomic structure . We have  to identify the correct…

Q: Which statements are consistent with Rutherford’s nuclear theory as it was originally stated? Why?a.…

A: Rutherford's atomic model also named as "nuclear model". As per Rutherford's nuclear theory, any…

Q: 1. The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is…

A: Element is represented by symbol AX Where A = mass number

Q: postulate in the atomic theory did the discovery of isotopes contradict

A: The postulates of atomic theory are shown below: Matter is made up of small indivisible particle is…

Q: 20. How many protons, electrons, and neutrons are in each isotope? electrons, and neutrons. protons;…

A: The protons, electrons and neutrons are the subatomic particle present in an atom of any element.…

Q: 4. A. B. C. D. Nitrogen atoms have 7 protons. How many electrons are in an ion with a charge of…

A: Given that, nitrogen atoms have 7 protons. We have to answer the given questions. Introduction: The…

Q: Write the atomic symbol, including the atomic number and the mass number for each of the following…

A: As we know atomic number is equal to number of proton. And mass number is the sum of the numbers of…

Q: Now add one neutron to make Boron -12. Notice that the atom shakes. Th indicates that the isotope is…

A: Atom is made up of sub-atomic particles. It has electrons, protons, and neutrons, these three…

Q: 5. Which of the following particles has the smallest mass? A. Electron B. Proton C. Neutron D.…

A: Identify the smallest particles among the given paticles ?

Q: Strontium (Sr, atomic number 38, average atomic mass = 87.62) naturally exists as 4 stable isotopes…

A: Strontium-88 is the most abundant. Hence option C is correct.

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.