QUESTION 8 The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenium-185, what is the other stable isotope? O a. 187 O b. 190 75 Re O c. 189 75 Re d. Re O e. BRe

Q: 5. Which of the following information can be determined from this isotope: sodium 23 L # of protons…

A: The isotope given is Sodium-23. Since the element is mentioned as sodium. Hence the atomic number of…

Q: IRevie Part B A certain element X has four isotopes. • 4.350% of X has a mass of 49.94605 amu.…

A: Atomic mass of an element can be defined as the mass of a one atom of given chemical element. It is…

Q: D Only one of the following atomic notations is written correctly. a. 3478Se b. 2⁹90 73 328e d.…

A: Atomic number of an element is equal to number of protons.Mass number of an element or an atom is…

Q: As we saw in the previous problem, lithium has two naturally occurring isotopes: Li-6 (natural…

A: The mass which is closest to the atomic mass of Li has to be given.

Q: 17. Sergio's teacher gave him a sample of a substance to identify. His teacher told him it is either…

A: Metal are hard , shiny, magnetic , and a good conductor of electricity .

Q: 1. Which of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

A:

Q: An element has three naturally occurring isotopes with the following abundances and masses::…

A: Since the atomic mass of any element is given by the average mass of its isotopes Hence the atomic…

Q: 34. How many protons, electrons and net does Be have? beryllum 4 Ве 9.0122

A:

Q: There are electrons and +2 neutrons in the ion of Cd Atomic number: 48 Mass number : 112 O A. 46, 48…

A: Given ion,    Cd2+ ion    Mass number = 112    Atomic number = 48

Q: 9. a. What is the atomic number of an element? b. What is the mass number of an isotope? c. In the…

A: Given question is related to defining atomic number, mass number of an element.

Q: Calculate the atomic mass element "X" if it has 2 naturally occuring isotopes withthe following…

A: Percent abundance of X-51 = 67.88 %  Percent abundance of X-53 = 32.12 %

Q: 2. The isotope of iodine with a mass number 131 is often used in medicine as a radioactive tracer.…

A: We know that, Number of proton= Atomic number=no. of electron (when no any charge present) no. of…

Q: Enter your answer in the provided box. 12 The atomic masses of the two stable isotopes of carbon, 13…

A: Given,  12C6 isotope has 98.90 %  molar mass = 12 amu And 13C6 isotope has 1.100 %  Molar mass =…

Q: How many protons and neutrons are contained in the nucleus of each of the following atoms? Assuming…

A: Hi, since you have posted multiple subparts question, we will answer the first three subparts for…

Q: Using the atomic symbol below, how many neutrons are in this isotope? 2357 92 iments

A: The number of neutrons is equal to the difference between the mass number of the atom (A) and the…

Q: What is the atomic mass of boron-12? A. 13.00335 amu B. 4.00260 amu C. 18.99840 amu D. --…

A: Since boron has atomic number = 5  Hence number of electrons in boron = 5 and to become neutral atom…

Q: Silicon has three isotopes: Silicon-28, Silicon-29, and Silicon-30. Which isotope is the most…

A: •So basically this question is based on mass of elements calculated from their isotopes and their…

Q: Protons, neutrons and electrons each have a mass of 1 amu. a. True b. False

A: The mass of an electron is 0.000549 amu. The mass of proton and neutron is approximately 1 amu.…

Q: Potassium naturally consists of 93.10% K-39 and 6.90% K-41. K-39 has an atomic mass of 38.963707…

A:

Q: The identity of a nucleus is determined by its   A. proton #   B. radioactive intensity   C.…

A: Nucleus of an atom contains proton and neutron.

Q: Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.9183 amu and an abundance…

A:

Q: Identify for an atom of 55Mn: element name: _____________ Z, atomic number = ____ A, mass number…

A: The nuclear symbol of the isotope given is 55Mn.

Q: Consider the following equation: The mass number of element X is: 219A+12B 93C+ belx +2'n

A:

Q: On a planet in a separate solar system, silver has an atomic weight of 107.41 g/mol. a) Much like on…

A: The isotopes of silver given are, And the average atomic weight of the silver = 107.41 g/mol.

Q: 239 1. Answer parts a, b, and c for the following nuclear symbol 34 Pu a. b. C. Fill in the missing…

A: A neutral species has the same number of protons and electrons, and the number of protons in the…

Q: 13. Which pair represents isotopes? a. He and »He b. seFe and sa:Mn c. Si and suP 14. Which pair…

A: Identify isotopes pair among them --

Q: / protons

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: Write atomic symbols for the following isotopes а. С-13 b. N-14 с. Pb-207 d. Cl-35 e. U-238 f. Cu-65

A: Atomic symbol is represented as                  zXA Where z= Atomic number  A= Mass number  And X=…

Q: Which one of the following is the chemical symbol of an atom with 17 protons and 20 neutrons?

A:

Q: 26. Silver has two naturally occurring isotopes with the masses and natural abundances as shown in…

A:

Q: 7. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation…

A: -> The number at down side in symbol is always atomic number . -> The number at upper side in…

Q: Strontium naturally exists as 4 stable isotopes with masses of 84, 86, 87, and 88. Which statement…

A: Elements exist in different isotopic forms and each form has its own abundance.

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.