If xenon has an atomic number of 54 and a mass number of 108, how many neutrons does it have? a. 54 b. 27 c. 100 d. 108

Q: Which subatomic particle was discovered by researchers working with cathode-ray tubes?

A: Cathode ray tube experiment Cathode ray tubes are sealed glass tubes are sealed glass tubes that are…

Q: the isotope of baron with mass number of 10

A: Given : mass number = 10 And element is boron i.e B

Q: Abeta particle has a mass number of ____ and a charge of _____.

A: Given A beta particle has a mass number of ____ and a charge of _____.

Q: The lesson is all about atomic mass

A:

Q: What is the mass number and atomic number of a chlorine atom that has 17 protons amd 18 neutrons?

A: Given that, chlorine atom that has 17 protons amd 18 neutrons then,

Q: Fill in the blanks. Isotope 30Si4+ has: Number of protons Number of neutrons Number of electrons…

A: Given  Symbol of isotope  = Si4+30 Number of proton   = ?  Number of neutron = ?  Number of electron…

Q: What is an atom's mass number? number of protons plus number of neutrons O number of electrons O…

A: We have to predict correct option for mass number.

Q: Using the data below, determine the missing mass of (19 9)F (atomic weight = 18.9984):  mass of…

A: For given element 9F19 we have to calculate out the missing mass of element upto four decimal using…

Q: Explain the difference between Z (the atomic number) and A (the mass number)?

A: Concept introduction: Atomic number and mass number are the basic properties of element. An atom…

Q: 2.70 Naturally occurring boron consists of two isotopes: 1°B (19.9%) with an isotopic mass of…

A: Average atomic mass is given as,

Q: The isotope of an unknown element, , has a mass number of 78. The most stable ion of this isotope…

A: Given,  The mass number of an unknown element isotope is 78. The most stable ion of this isotope has…

Q: How many neutrons are in the nucleus of the atom  115 In? 49

A: Ernest Rutherford found the atomic nucleus, a thin, dense area of protons and neutrons at the core…

Q: For each set of atoms identify the isotopes

A: For each set of atoms, isotopes are to be selected.

Q: Which subatomic particle determines the atomic number?What determines the mass number?

A: Atom is the fundamental unit of a chemical compound or matter. An atom consists a nucleus in which…

Q: the neutral atoms of all of the isotopes of the same elements have. A. different numbers of protons…

A: Given : Neutral atoms of all isotopes of same elements.

Q: 53 +3 Cr 24 What is the atomic number?

A: Atomic number is 24 of given symbol.

Q: Mass of one a mu)             Carbon Type 1                        12.0             Carbon Type 2…

A: The mass of 1 carbon -12 atom = 12 amu. The mass of 1 mole of Carbon = 12 g/mol.

Q: 13) How many neutrons are in carbon-12 ? A) 7 B) 8 C) 6 14) Identify the chalcogen that has 18…

A: The question is based on the concept of atomic structure. we have to count the subatomic particles…

Q: Rutherford bombarded a gold foil with alpha particles. Describe what he observed and what did his…

A: Rutherford bombarded a gold foil with alpha particles which are positively charged particles and…

Q: What subatomic particle is the primary concern of chemistry?

A: Bohr model gives information about three basic subatomic particles.

Q: 4. What is the atomic number? (a) 14 (b) 7 (c) 4 (d) 10

A: The atomic number indicates the number of protons in the nucleus. The number of protons define the…

Q: (a) How many protons are found in one atom of selenium-80? protons (b) How many neutrons are found…

A:

Q: Neutrons: O Have a relative mass of 1 and a charge of +1 O Have a relative mass of 0 and a charge of…

A: A neutron is a sub-atomic particle with no net electrostatic charge, with a very similar mass to a…

Q: Which statements are consistent with Rutherford’s nuclear theory as it was originally stated? Why?a.…

A: Rutherford's atomic model also named as "nuclear model". As per Rutherford's nuclear theory, any…

Q: "the atom with 38 protons and 49 neutrons"

A: Given,        Number of protons = 38         Number of neutrons = 49  Assume an atom is 'X'

Q: How neutrons, are in 8838Sr?a) 50 b) 88 c) 38 d) 126

A:

Q: Determine the number of neutrons in each isotope: (a) carbon-14; (b) 81Br.

A: The number of neutrons present in each isotope has to be given.

Q: An element from the Periodic Table is shown below. The atomic mass is given. A) Give the Name,…

A: The answer is given as follows

Q: 10. How are elements organized on he Periodic Table of Elements? A increasing atomic mass B…

A: The periodic table (the modern one) is framed based on the modern periodic law which state that the…

Q: 47 How many protons and neutrons are in an atom of Sc ? Number of protons = ? Number of neutrons

A:

Q: An atom has a +3 charge a mass # of 42 and 20 neutrons. What is the amount of electrons it has?

A:

Q: 19. An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does…

A: Atomic number = 15  Mass number = 31  Neutron = mass number - atomic number  Neutron = 31-15…

Q: The nucleus of an atom accounts for most of the size and mass of the atom. O very little of the size…

A: According to Dalton's atomic theory, compound is formed by combining elements and it's also based on…

Q: Which idea came out of Rutherford’s gold foil experiment?a) Atoms contain protons and neutrons.b)…

A: Rutherford’s gold foil experiment is also called as Planetary model of the atom in which he told…

Q: The nucleus of an atom contains 56 neutrons.  The atom contains 43 electrons.  What element is it…

A: Given, Number of neutrons = 56 Number of electrons = 43 To calculate the mass number and to find…

Q: What is the mass number of a potassium (K) atom that has 20 neutrons? A 39 20 19 18

A: An atom is made up of protons, neutrons, and electrons. Protons and neutrons together make the…

Q: mass number

A:

Q: involving alpha particles and gold foil that led to the discovery of the nucleus in atoms. The…

A: During Rutherford's experiment, most of the α particles emitted from a radioactive source bounced…

Q: How do the terms atomic mass and atomic weight differ?

A: Atomic mass and atomic weight, both the terms are used for measurement of its quantity.

Q: What are the main components of an atom ?

A: The main components of an atoms has to be given.

Q: What is the atomic mass of Cadmium ? A) 12.011 amu B) 40.078 amu C) 132.91 amu  D) 112.42 amu

A: Given atom,        Cadmium (Cd)

Q: A se atom has a mass number 78. Determine the number of neutrons, electrons and protons in this…

A: Selenium atom:In this atom, the atomic number illustrated by subscript and the mass number…

Q: An atom contains 23 protons, 28 neutrons and 26 electrons. The atomic number and mass number for…

A:

Group 14 Elements

The following elements come under group 14 of the periodic table.