46. The diagram at the right represents two adjacent atoms of sulfur. The measure ôf distance o yasl closest to: a) 63.5 pm b) 104 pm c) 208 pm d) 264 pm

Q: A sample of element X has two naturally occurring isotopes. The isotope X-45 makes up 35.8% of the…

A: Isotopes are species having same atomic number but different mass number.  Given: The percentage of…

Q: 5. In a chemical formula, which element is listed first?

A: In a chemical formula, which element has to be listed first has to be given.

Q: in the star wars series, the death star is a spherical space station and weapon with a diameter of…

A: The diameter of death star is 99 miles. The diameter of solid iron sphere is 6.23 times larger than…

Q: Which of the following statements is correct? A. All metals are shiny and can conduct electricity.…

A: Which of the following statement is correct ?  A. All metals are shiny and can conduct electricity.…

Q: Complete the following table by providing the symbol or formula that is used to represent a sample…

A: The chemical elements are represented by using one or two letters which is defined as chemical…

Q: 11. A monoatomic anion with two charges contains 36 electrons. It is statements is false? А. Kr В.…

A: We have to consider an anion. Now going to the question A. is neutral atom…

Q: :0: What does the diagram represent? A) A neutral oxygen atom B) An oxygen atom with 7 protons C) An…

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a…

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A: Given information: Assuming Mass of boron sourced from turkey = 10.0129 amu Mass of boron obtained…

Q: The radius of a strontium atom is 215 pm. How many strontium atoms would have to be laid side by…

A: Diameter = 2 X Radius

Q: In a series of experiments, a chemist prepared three differentcompounds that contain only iodine and…

A:

Q: elements are made up of one type of atom and compounds are made up of multiple atoms bonded…

A: According to the definition, a molecule is made up of multiple atoms bonded together. If a molecule…

Q: How many elements are presently known? About how many occur naturally?

A: Periodic table contains 119 elements but the last elements 119 know as Ununennium or eka-francium is…

Q: 34. Barium Carbonate (s) Barium Oxide (s) + Carbon Dioxide lg) a&b: C: d:

A: Answer:- this question is answered by using the simple concept of writing the balanced chemical…

Q: How many atoms of Helium can a balloon that has a 25 cm diameter hold? The density of Helium is 1.18…

A: The mole (abbreviated mol) is the SI measure of quantity of a “chemical entity,” such as atoms,…

Q: 35. What is the total number of electrons in a phosphorus ion?

A: The phosphorous atom symbol is P which has the atomic number 15.

Q: Imagine you were to create a graph where you plot the density of the elements in Group 16 as a it…

A: Elements in periodic table exhibits some common periodic trends . We can compare the physical…

Q: Differentiate between an atom, an element, and a molecule.

A: Element - are naturally occurring species  Atom-building block of molecule  Molecule - made up of…

Q: 19. Name or Write the following compounds: a) Dinitrogen hexafluoride = b) Lead (IV) oxide c) NaMno,…

A: a.) From the name it is clear that the compound contain 2 nitrogen(di) and six fluorine(hexa) atoms.…

Q: 1. Count the atoms for each element in the for (C:N.).N NaHCO,

A: Given molecule : first molecule :(C2N4)2N 1 mole mole of any chemical substance contains Avogadro's…

Q: 7. Name the following compounds a. CI X Br Br b. C. d.

A: According to IUPAC nomenclature, select the longest chain of hydrocarbon which contains the maximum…

Q: A yanadium atom has a diameter of 2.60×10-10 m. Suppose the atoms in 1.86 mol of vanadium atoms are…

A: Given  Diameter = 2.6*10-10 Moles of vanadium = 1.86

Q: D plot io. Analyze and Conclude 1. Compare How does the size change when an atom forms a c cation…

A:

Q: 12)Which of the following is an ionic compound?   Select one: A. Carbon dioxide B. Barium oxide C.…

A: Ionic compound if formed by transfer of electrons between two atoms.

Q: 7. Name each of the following compounds: c. KMNO d. K,Cr,O, a. BaSO, b. NANO2

A: Some of the prefixes are used in naming the inorganic molecular compounds, they are listed below.…

Q: Write the systematic names for the given compounds. Spelling counts! B IU X2 x2 人人 :0: :0: As As.…

A:

Q: The radius of a rhodium atom is 134 pm. How many rhodium atoms would have to be laid side by side to…

A: We have to calculate the number of rhodium atoms.

Q: Two different atoms have six protons each and the same mass. However, one has a negative charge…

A: SUBATOMIC PARTICLES: The particles are tiny particles that are present inside the atom. They are…

Q: An element has three isotopes, A, B, and C. Percent abundance of the isotopes A and C are 60 % and…

A: The percent natural abundance of isotope A is 60%. The percent natural abundance of isotope C is…

Q: 22. As in question 21 determine the mass % of N (nitrogen atoms) in ammonia (NH3), urea (CHẠN2O) and…

A: Mass percent is the mass of the element divided by the mass of the compound or solute.

Q: The radius of a hydrogen atom is 37 pm (1pm 10-12m). How many hydrogen atoms lined up side to side…

A: Given,Radius of hydrogen atom = 37 pmDiameter of hydrogen atom = 2 × radius = 2 × 37 pm = 74 pm…

Q: Silver chloride, often used in silver plating contains 75.27% Ag. Calculate the mass of silver…

A:

Q: Which statement about protons is true?(a) Protons have twice the mass of neutrons.(b) Protons have…

A: An atom is the fundamental particle of matter. Atoms consist of a certain number of protons and…

Q: 2) a OCH b The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by…

A:

Q: An ion has 28 protons, 24 electrons, and 30 neutrons. What is its ionic charge?

A:

Q: d. Sulfur trioxide, SO, e. dinitrogen tetroxide, N,O, f. Chlorate, CIO," (one chlorine and three…

A: The species given are SO3, N2O4 and ClO3-.

Q: What is the chemical formula for the molecule illustrated below?

A: Since you have not mentioned the atoms which each colour of ball is representing, I'm assuming that…

Q: 2:58 PM, Apr 22 H3C H30+ ? Brz SCH3

A: In this question, we will Identify all the Reagent and one middle starting material which give…

Q: 11. A substance whose formula is A20 (A is a mystery element) is 60.0% A and 40.0% O. Identify the…

A: We are authorized to answer one question at a time, since you have mentioned two questions, so we…

Q: Explain why the symbol for an atom of the element oxygen and the formula for a molecule of oxygen…

A: Elemental symbol - Elemental symbol is the representation of an element/atom which is seen in the…

Q: A gold atom has a diameter of 2.88 × 10210 m. Suppose the atoms in 1.00 mol of gold atoms are…

A: Concept Introduction: In 1 mole of any substance contains 6.023 x 1023 units of the substance. The…

Q: Match the following terms with the best description below. Place the letter on the line. B.…

A: Answer- 1) study of matter- anything having mass and occupying space →Chemistry 2) Main attractive…

Q: Boron occurs naturally as 10B and 11B. Which isotope is most abundant? (Refer to the Periodic…

A: Isotopes are atoms with the same number of protons, but differ in numbers of neutrons   Boron (5B)…

Q: 11) Calculate the number of atoms of each element: 5Na,SO,

A: according to mole concept one mole of any species contains avagadro number of atoms,  molecule and…

Q: 50. Provide the formula for each of the following binary molec- ular compounds. (a) chlorine dioxide…

A: A binary molecular compound are compound which are composed two two different elements and both…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.