Which of the following elements is the smallest? Oxygen, O (#8) Carbon, C (#6) O Sulfur, S (#16) Silicon, Si (#14) Which of the following elements is the smallest? Boron, B (#5) Bromine, Br (#35) Gallium, Ga (#31) O Fluorine, F (#9)

Q: How does the radioactive isotope C-14 differ from its stable counterpart C-12? It has a different…

A: C-14 - It has the same number of protons but two more neutrons than C-12 so option - H is correct as…

Q: amino acid methionine is depicted in the picture.  C5H11NO2S is the molecular formula for…

A:

Q: Do both members of the following pairs have the same number of protons? Neutrons? Electrons?…

A: An element is represented by the symbol XZA, where A is the mass number and Z is the atomic number.…

Q: At death, a nobleman in ancient Egypt was mummified and his body contained 1.4 x 10-3 g of…

A:

Q: What is the atomic number for the element that is in group IIIA(13) and period 4? Atomic number =…

A:

Q: Which of the following isotopes has the highest number of neutrons? 105 Pd 46 O 25 Si 14 41 K 19 104…

A: We know that, No. of neutron = mass number - atomic number thus,

Q: Identify each of the following elements as a metal, a nonmetal, or a metalloid:a. located in Group…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: How many protons, neutrons, and electrons does the following ion have? 56 Fe2+ 26 O 26p, 30n, 28e…

A: Given - Fe2+2656The number of protons equal to atomuc number then,protons=26The number of neutrons…

Q: Specify the number of protons and electrons in each of the following ions. A) Se^2−, needed for…

A: To specify the number of protons and electrons we will use the following concept . Since we know…

Q: 2.89 In which one of the following pairs do the two species resemble each other most closely in…

A: The answer is option (c), which are C612 and C613. It is because, the chemical properties are the…

Q: How many protons, neutrons, and electrons are in the followingatoms? (a) 40Ar, (b) 65Zn, (c) 70Ga,…

A: (A) 40Ar= protons- 18, neutrons- 22, electrons- 18 (B) 65Zn= protons- 30, neutrons- 35, electrons-…

Q: f you look at Gallium's atomic mass on the periodic table, which isotope is more abundant in nature:…

A: Gallium belongs to IIIA group in the periodic table. There are two isotopes of Gallium that occurs…

Q: 1. Atomic Structure. 106 a) 46 Pd*2 b) 232 92 U

A:

Q: How many protons, neutrons, and electrons are in the following atoms? (a) 84Kr, (b) 200Hg, (c) 59Co,…

A: Given, The mass of Kr (Krypton) = 84 The mass of Hg (Mercury) = 200 The mass of Co (Cobalt) = 59 The…

Q: What do 14C+ , 15N, and 17F-  have in common?     the same number of electrons     the same…

A: no of electron 14C+=

Q: Calculate the number of protons, neutrons, and electrons in 16 g of Si-28. The isotope Si-28 has a…

A: Moles of Si present = mass of Si taken / Atomic mass of Si = 16 / 27.977 = 0.572 approx  Hence the…

Q: 14. Which of the following has 58 neutrons, 45 protons, and 45 electrons? Mo (A: 103; Z: 45) Tu (A:…

A: The number of electrons in an atom is always equal to its atomic number . According to quantum…

Q: isotope Helium-3

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: Consider two isotopes Fe-54 and Fe-56.(a)Write the nuclear symbol for both isotopes.(b)How do they…

A: (A) The atomic number (Z) of iron is 26. The mass number(A) of Fe-54 is 63. Also, the nuclear symbol…

Q: How many protons are there in Lithium -7

A: In S-block alkali metal elements consists of first lithium metal having the symbol Li with atomic…

Q: 86. the symbol for the atomic number is Z the United States has the largest water footprint of…

A: Given:  Q 86 to 95 for True or False Q 96 to 100 for Matching

Q: . An iron supplement is used to treat anaemia and 50 mg of Fe2+ is required per tablet. If the iron…

A: The question is based on quantitative estimation. we have to calculate how much compound is required…

Q: 5. Which elements are halogen elements? A. Fluorine, Chlorine, Bromine B. Calcium, Strontium, Barium…

A: We would use periodic table properties to answer these questions.    Note : As you have uploaded…

Q: How many protons, neutrons, and electrons does potassium have? O 20p, 19n, 19e 19p, 39n, 19e 19p,…

A:

Q: Which of the following elements is the largest? O Aluminum, Al (#13) O Indium, In (#49) Antimony, Sb…

A: We are authorised to solve only one question at a time. Please post rest of the question separately.

Q: 7. How many Centimeters are in 133 meters Kilobytes are in 6.02 gigabytes Micrometers are in 5144…

A:

Q: Elements of which of the following groups on the periodic table always occur naturally as monatomic…

A: The groups given are, A) Noble gases B) Halogens C) Chalcogens  D) Pinctogens E) Group 4 A (14)…

Q: Below is a list of properties of elements. Classify them as a property of metals, nonmetals, or…

A: Properties of Metals : Conduct heat, shiny, solids at room temperature, ductile, high melting point,…

Q: Is the underlined part of the macroscopic domain, or the microscopic domain of chemistry ? A carbon…

A: The term macroscopic refers to the objects that can be seen by the naked eyes. Macroscopic is just…

Q: Give the symbol for an element that is : 1. A transition metal in the fourth period from the…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Earth’s surface area is 5.1 x 108 km2, its crust has an average thickness of 35 km and an average…

A: Since the volume of earth will be = surface are of earth X thickness of earth = 5.1 X 108 X 35 =…

Q: The vitamin niacin (nicotinic acid,C6H5NO2) can be isolated from a variety of natural sources such…

A:

Q: 6. How many electrons, protons and neutrons, respectively, are in 60 Ni 2+2 a. 26, 28, 32 b. 28, 28,…

A:

Q: There are protons, neutrons, and electrons in 147₁ Hs+5

A: Atom is composed of three subatomic particles, which are electrons, protons and neutrons.  Protons :…

Q: Activity 1: Isotopes The picture to the right shows that there are three different kinds of neon…

A: #Activity-1: Three isotopes of hydrogen(H) are Hydrogen-1 (H-1), HYdrogen-2(Deuterium, D-2) and…

Q: Identify each of the following elements as a metal, a nonmetal, or a metalloid. Drag the appropriate…

A: the given element is classified into the following categories:

Q: Describe an alpha particle. What nucleus is it equivalent to? •    Describe a beta particle. What…

A:

Q: C. Isotopes or Different Elements? Use the information given below to determine if the pair of…

A: Isotopes :Atoms of the same element which the same atomic number but differentmass number are called…

Q: 10.Write the appropriate Isotopic symbol for each of the following isotopes: •Z = 74, A=186 Z= 80,…

A: Z represents atomic number of element  And A represents  mass number of an element.  It represents…

Q: Which of the following elements is the least metallic?   a. Aluminum   b. Phosphorus   c. Magnesium…

A: The least metallic elements are generally placed at the right-side upper corner of the periodic…

Q: Uranium hexafluoride, UF6, is an important compound used in the enrichment of uranium by gaseous…

A: Where uranium can be found on the periodic table ?

Q: What is the atomic weight for the element that is in group 2A and period 4? What is the atomic…

A: (1) The element in group 2A and period 4 is Calcium whose atomic weight is 20 a.m.u.

Q: What type of light is used in a TV remote control?     What is the mass number of the radioactive…

A: 1. A remote has an Infrared (IR) transmitter led which uses IR light to transmit you input to TV…

Q: Below is a list of properties of elements. Classify them as a property of metals, nonmetals, or…

A: Given properties:

Q: Calculate the number of protons, neutrons, and electrons in 15 g of Si-28. The isotope Si-28 has a…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: 11. Which best describes isotopes? a. Same number of neutrons, different number of electrons b. Same…

A: Isotope having same atomic number but different mass number.  metal loose electrons and form cation…