Refer to the periodic table and find the following information:a. the symbol of the element with an atomic number of 40b. the atomic mass of the element sodium (Na)c. the element whose atoms contain 24 protonsd. the known element that should most resemble the recently discoveredelement ununseptium, with an atomic number of 117

Q: QUESTION 2 The maximum number of electrons that can occupy the 3rd shell (3rd floor) of an atom is…

A: 3rd shell has three sub shells s, p and d. s can posess 2 electrons. p can posess 6 electrons. d can…

Q: Provide the atomic number, atomic mass, and name of theelement represented by each of the following…

A: The atomic number gives the total number of protons. Atomic mass is the sum of total number of…

Q: Must the numbers of protons, electrons and neutrons be the same or different in each of the…

A:

Q: 12. How many protons, neutrons, and electrons are in the following? a. 1 atom of iodine-127 b. 1…

A: Since we know that  Atomic number = number of proton  Mass number = number of protons + number of…

Q: 3. Write the name and symbol for each of the elements described below) a. Halogen in Period 4 b.…

A: By using this period table we can get the answer for the given questions .

Q: 1. What specific material(s) is (are) used and what specific properties this (these) material(s)…

A: The objective of the question is to find the specific material used for the given items and its…

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

A: Atomic Charge

Q: Naturally Occurring Isotopes of Copper Atomic Mass Isotope (atomic mass units, u) 62.93 64.93 Cu-63…

A: Cu - 63 atomic mass = 62.93 amu Abundance = 69.17% Cu - 65 atomic mass = 64.93 amu Abundance = 30.83…

Q: If two neutral atoms are isotopes of each other, which of the following statements are true. More…

A:

Q: 2. 10 5 Consider the element with the electron configuration [Kr]5s 4d 5p. This element is Select…

A:

Q: Atomic Radius decreases as you move left to right even though there are additional protons ,neutrons…

A: Atomic radius decreases as you move left to right even though there are additional protons, neutrons…

Q: Rutherford's gold foil experiment contributed to the discovery that: A. Atoms contain electrons B.…

A: The given statements about Rutherford's gold foil experiment are : A. Atoms contain electronsB.…

Q: How many protons and electrons are there in a neutral atom of each of the following elements?a.…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Select one: O a. Neutron O b. Electron O C. Nucleus O d. Proton

A: We have to know discovery of Rutherford

Q: Refer to the periodic table, and find the following information:a. the symbol of the noble gas in…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3 sub-parts. Please resubmit the…

Q: Cations are Select one: O a. charged subatomic particles O b. atoms that have gained electrons O c.…

A: In an atom contains equal numbers of protons and electrons. A proton is positively charged subatomic…

Q: Which of the following is not true about the isotope nickel - 58? Select one: O a. It has a mass…

A: Nickel - 58

Q: A naturally occurring sample of an element contains only twoisotopes. The first isotope has a mass…

A: % of first isotope = 60.11 % Mass of first isotope = 68.9255 amu Mass of second isotope = 70.9247…

Q: Choose all of the following that apply to oşmium, Os. a. Metalloid b. Alkali metal Oc. Transition…

A:

Q: Which of the following is true about the atom represented by the symbol: 39 19K? This atom has:   a.…

A: Welcome to bartleby !

Q: 3. What is the symbol for the element in group 7 and series 5? a. Nb b. Db c. Te . Bh e. None of the…

A: In the periodic table, group 7 elements are Mn, Tc, Re and Bh. In the above elements, Tc is present…

Q: Using the periodic table, determine the following. a. The atomic number of the element magnesium b.…

A: The atomic number of element magnesium. In the the periodic table, magnesium was placed at third…

Q: 14. The table shows the number of subatomic particles in Atom X and Atom Z. Atom X Z # of protons #…

A:

Q: What is correct from multiple choice

A: Dalton’s Atomic Theory: Atoms are the indivisible building blocks of all matter and cannot be…

Q: 5. Which one of the following statements about atomic structure is false? A An atom is mostly empty…

A: Atom is made up of three fundamental particles that is electron proton and neutrons .

Q: What is the symbol for the lightest alkali metal with three neutrons? Select one: a. H b. Li c. B…

A: Lithium Lithium is an alkali metal with the atomic number = 3 and an atomic mass of 6.941 g/mol.…

Q: The isotope of an unknown element, X_ has a mass number of 77. The most stable ion of this isotope…

A: Number of protons = atomic number  Number of protons = number of electrons (in neutral atom)…

Q: Which one of these elements is a transition element? Select one: a. Pb b. Sr c. H d. Fe e. As

A:

Q: Which of the following atoms would you expect to be smallest in the follow set of elements?   A.K…

A: In the periodic table, left to right size of the atom is decreases and up to down increases. Argon…

Q: Write the element symbol that fi ts each description. Use a superscript for the mass number and a…

A: a) an element that contains 10 protons and 12 neutrons Ne1022 b) an element with atomic number 24…

Q: for elements (Br, Ca, Fe, Na, S, Si, and Xe) which of the following term(s) apply? a. metal b.…

A: To classify the elements we have see in which block of the periodic table  the given element is…

Q: 42. What is the maximum number of electrons that an orbital can have? * a. 1 electron b. 2 electrons…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: In complete sentences, describe the similarities and differences between:a. different isotopes of an…

A: (a) similarities and differences between isotopes of an element: Various isotopes of an element have…

Q: Which element is below is not classified as a lanthanide or actinide a. Ceb. Smc. ud. Fre. All…

A: The objective of the question is to identify the element that is not classified as a lanthanide or…

Q: What element is represented by X in the atomic symbol notation 195 is over 78X ? Select one: A.…

A: The objective of the question is to identify the element represented by X in the atomic symbol…

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: How many valence electrons does each of the following elements have? a. Bromine b. Carbon c. Lithium

A: Number of valence electrons in an atom is equal to the number of electrons in the outermost shell.

Q: Identify the element fi tting each description. a. an alkali metal in period 4 d. a main group…

A: a. an alkali metal in period 4 : K ( Potassium )   b. a second-row element in group 7A : F (…

Q: What is correct from multiple choice

A: Since the symbol of Hydrogen is H and not He Hence option b is correct answer

Q: For each of the following element symbols, give the name of theelement, its atomic number, and its…

A: There are 118 elements in the periodic table. Each element has its own symbols, atomic number and…

Q: a sample of the element boron with have some atoms with six neutrons and some atoms with 5 neutrons;…

A: Given is a sample of biton atoms, of which some contain 5 neutrons and some contain 6 neutron. We…

Q: Put the correct option in the correct plank. 1. Dalton 2. isotopes 3. shells 4. electron 5.…

A: Atomic theory was given by Dalton.

Q: D. List down 5 noble gases E. List down eight transition metals F. Aside from the noble gases, list…

A:

Q: An element has 2 naturally occurring isotopes with the following masses and abundances. A. Calculate…

A: Given  2 Naturally occurring Isotopes of an element  Isotope mass = 34.97 amu Percentage abundance…

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…