13. Which pair represents isotopes? a. He and »He b. seFe and sa:Mn c. Si and suP 14. Which pair represents isotopes? a. Ca and wK b. sFe and seaFe C. 2389:U and 239U

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: A. For the isotope chlorine-37: a. How many protons are in chlorine-37? b. How many neutrons are in…

A: THe objective of the question is answer the questions related to .

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: Which pair represents a set of isotopes? O A. calcium-48 and titanium-48 O B. 74se and 82se O C.…

A: Isotopes : Isotopes are the atoms of same  element with same atomic number but different number of…

Q: Lithium has two naturally occurring isotopes, Li and Li. The average atomic mass of lithium is…

A: Isotopes are defined as atoms having same atomic number but different mass number due to different…

Q: Which statement about the three fundamental particles is false? O a. The charge of a proton is equal…

A: Electrons, protons and neutrons are considered as fundamental partials of atom

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: Which one of the following is overall neutral in charge? O a. Pb with 80 neutrons O b. Li atom with…

A: An element can exist as an atom or an ion. Ions are formed by gaining or losing electrons. When the…

Q: A. What is the mass number of an atom of Iron ( atomic number 26) with 32 neutrons?  B. Is this…

A:

Q: 4. 14N and 1C have the same number of A. isotopes. B. protons. C. neutrons. D. electrons.

A: The subscript denotes the atomic number and the superscript denotes atomic mass.

Q: Why do atoms combine chemically with other atoms?

A: To explain: Why do atoms combine chemically with other atoms?

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: B. Use the information provided for each isotope to complete the chart. Atomic Symbol 35C1 88Cr…

A: Note : Dear student since you have posted multiple questions, we will solve only first question for…

Q: Isotopes have the same number of a. Protons; electrons Ob. Neutrons; protons c. Electrons, protons…

A: Isotopes are two or more forms of same element which consist of equal numbers of protons but…

Q: 13. Which of the following are isotopes? a. P3- and Ar b. 1251 and 127| c. O and O2- d. Na* and K*…

A: b) 125I and 127I

Q: Electron- Proton- Atomic number- Atomic mass- Neutron- Nucleus- C. Isotopes or Different Elements?

A: A typical atom is made up of subatomic particles that include electrons, protons, and neutrons.…

Q: MCQ 1: The smallest particle of an element which can take part in any chemical change is known as…

A: In any chemical reaction or chemical change atoms participate in a chemical reaction.  Since nucleus…

Q: Fill in the blanks:a. Isotopes of an element differ in mass because the atomshave a different number…

A: The complete statements have to be provided.

Q: From the results of his gold foil experiment, Rutherford concluded that   Group of answer choices A.…

A: From the results of his gold foil experiment, Rutherford concluded that atoms are composed of a…

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: 5. Fill in the following table (the first line is competed as an example) Ion Number of Protons…

A:

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.