( a ) Eva l u a te t h e expre s s i o n s 2 * 1, 2 * 11 + 32,2 * 11 + 3 + 52, and 2 * 11 + 3 + 5 + 72. (b) How do the atomic numbers of the noble gases relate to the numbersfrom part (a)? (c) What topic discussed in Chapter 6 is thesource of the number “2” in the expressions in part (a)?

Q: Which is the largest atom out of the following? a) Bi b) N c) P d) As

A: We will answer this question using study  periodic table and periodic trends.

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: What would be your reaction to a claim that a new element had been discovered, and it fit between…

A: Periodic table is a collection of chemical elements which are arranged by increasing atomic number.…

Q: An element with the electron configuration [Xe] 6s 4f145d would belong to which class on the…

A: Given :- electron configuration of an element = [Xe]6s14f145d9  To identify :- class of that element

Q: Which of the following describes the element Ba? Choose all that apply:(a) is very reactive as a…

A: The element given is Barium i.e Ba.

Q: Assuming that the seventh period of the periodictable has 32 members, what should be the…

A: Atomic number is the unique property of the compound. It is basically the no. of protons that are…

Q: 7.83 Referring to the periodic table, name (a) the halogen inthe fourth period, (b) an element…

A: Since you have posted multiple sub-parts, the answer for first three sub-parts are given below.…

Q: Provide the following information: a. the atomic number and symbol of the lightest alkali metalb.…

A: a. the atomic number and symbol of the lightest alkali metal Symbol = Li Atomic number = 3 b. the…

Q: Write the symbol for the monatomic ion that has a charge of-1 and the condensed electron…

A: • We need to write the symbol for the monoatomic ion that has a charge of -1 and the condensed…

Q: 2.) What is the number of free electrons per copper atom? Assume a density of 8.9 g/cm3 and an…

A: Here, in this question we have to calculate the number of free electron in copper atom. according to…

Q: Explain the similarities and differences as compared to element 118 Og if a new element was…

A: A question based on periodic trends that is to be accomplished.

Q: An atomic cation with a charge of +1 has the following electron configuration: [Ne] 3s

A: Electronic configuration refers to the systematic arrangement of electrons in the various shells and…

Q: where does the reactivity of an atom primarily arise from

A: Atoms are made up of neutrons, protons, and electrons. Neutrons are the non charged particles while…

Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. Ba

A:

Q: (a) Are the elements calcium, barium, and radium in the same group or same period in the periodic…

A: A horizontal row in the periodic table is known as periods and a vertical column in the periodic…

Q: Explain what the name scandium(III) oxide meansin terms of electrons lost and gained, and…

A: In an ionic compound, there is complete transfer of electrons.

Q: Read eacn aescription in the first column of the table below. If any chemical element with atomic…

A: The systematic arrangement of elements in a table is known as periodic table. There are 18 groups…

Q: In the equation used to determine the energy of the particles described in question (11), E = hc/λ,…

A: The question is based on the concept of atomic structure. we have been given equation for energy of…

Q: Calculate the ratio between the radius of the radium nucleus and the radius of the oxygen nucleus.…

A: The ratio between the radius of the radium nucleus and the radius of the oxygen nucleus has to be…

Q: 2)Why did the observed chemistry of thallium mislead Mendelev to place the group 13 element (Tl) in…

A:

Q: a ) Eva l u a te t h e expre s s i o n s 2 x 1, 2 x (1 + 3),2 x(1 + 3 + 5), and 2 x (1 + 3 + 5 + 7).…

A: In the expression, the total number of valence electron is calculated in which 2 is the number of…

Q: Which of the following refer to elements in D-block? O Inner transition metals O Metalloids O…

A: A transition metal can be defined as any element in the periodic table, which includes groups 3 to…

Q: Arrange the following elements according to the increase in their atomic sizes; (0, S, Se) S> Se >0…

A: Atomic radius: The atomic radius of an element decreases as we move from left to right in a period…

Q: Not a member of the Noble Gases * Ar Bi Хе O Kr Not a member of the Halogen Family * O F At In Which…

A:

Q: 2.) What is the number of free electrons per copper atom? Assume a density of 8.9 g/cm³ and an…

A:

Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. K

A: Given elemental symbol is K. Is it a metal or nonmetal or metalloid?

Q: Read the given expression. X = number of protons - number of core electrons Which of the following…

A:

Q: How do I tell if S2- is the most common isotope ? and what are difference between a Bohr-Rutherford…

A: Isotopes are the atoms of the same element having different atomic mass, Eg Hydrogen has 3 isotope…

Q: A biochemist who is studying the properties of certain sulfur (S)–containing compounds in the body…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: Galium (Ga) is an element in group III with atomic number 31. By referring to the Periodic Table,…

A: Ionisation energy is amount of energy required to remove electrons from outermost shell of an atom.

Q: How do you know that an element is a metalloid?

A: A metalloid is an element that has properties that are intermediate between those of metals and…

Q: Identify the major difference and the major similarityamong isotopes of an element

A: Given information,   The major difference and the major similarity among isotopes of an element

Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. Sb

A: Metal: these are lie on the left side and middle of the periodic table. Metals are good conductors…

Q: Do nonmetals tend to gain or lose electrons? Do theybecome cations or anions?

A: Is nonmetals tend to gain or lose electrons has to be given,

Q: ving: Why are the elements' atomic masses not in strict increasing order in the periodic table even…

A: As per the policy, we are only allowed to answer only 1st question. To get the answer of other…

Q: Name each of the following oxides. Assuming that thecompounds are ionic, what charge is associated…

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

Q: Explain how Dalton’s atomic theory accounts for the law of conservation of mass?

A:

Q: xplain the characteristics of Group X elements

A: This question is related to alkali metals.

Q: ionization energies of group 1A(1) elements

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: Moseley’s experiments on X rays emitted from atoms led tothe concept of atomic numbers. (a) If…

A: a.  Now to see which element is placed next to chlorine in the order of increasign atomic mass we…

Q: 1 '11Na, 12Mg, 13A1 Which of the two elements has the higher ionization energy?

A: Answer 1)  In Which of the following elements ( 11Na, 12Mg & 13Al ), the two which  has highest…

Q: 3-48 Based on periodic table position, select the two elements in each set of elements that would be…

A: