What is the mass number for an atom of calcium containing 20 protons and 21 neutrons?

Q: Estimate the optimal number of neutrons for a nucleus containing 70 protons.

A: The neutrons and protons, the contents making the nucleus of an atom determine its stability.…

Q: What is distinctive about isotopes of elements, and why are they important?

A: The atomic number of an element is expressed as the number of protons and it is equal to the number…

Q: What is the mass number for an atom of mercury containing 80 protons and 118 neutrons?

A: Given, number of protons = 80 Number of neutrons = 118

Q: Of the three subatomic particles, a(n)  has a charge but negligible mass, whereas a neutron has mass…

A: To find: From the subatomic particles : a) n has a charge but negligible mass b) a neutron has mass…

Q: what's the atomic mass units for 1 bratom with a mass of 1.31 x 10^ - 23

A: To find atomic mass unit  of 1 Br atom if mass of atom = 1.31 x 10-23 g

Q: How many neutrons are in an atom of aluminum (Al) with a mass number of 27?

A:

Q: When does the number of Neutrons vary?

A: An atom consits of the electron,proton and neutron. The atomic mass of the atom depends upon the…

Q: How many protons and neutrons are present in an atom of 45/21A5Sc

A: The above is isotope of Scandium.

Q: Consider the following equation: The mass number of element X is: 226A + 15B → 80C + {x}X + 4 1n

A: The nuclear reaction is  226A + 15B → 80C + {x}X + 4 1n  Now , Total mass number in left hand side…

Q: Consider the atom with the chemical symbol Ru. What would be the mass number for an atom of Ru which…

A: Mass number is  the sum of the numbers of protons and neutrons present in the nucleus of an atom..…

Q: What is the mass number for an atom of barium containing 56 protons and 80 neutrons?

A: Atomic number = Number of protons  Mass number = Number of protons + number of neutron Given that:…

Q: What can you say about the number of neutrons in the stable isotopes of fluorine, sodium, aluminum,…

A:

Q: particular element has two naturally occurring isotopes. The first makes up 20.000% of the total and…

A:

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: two protons and two neutrons are removed from the nucleus of an neon-20 atom, a nucleus of which…

A:

Q: What isotope has 18 protons and 22 neutrons?

A: Isotopes are different forms of same element, having same number of protons in the nucleus but…

Q: What is the mass number for an atom of barium containing 56 protons and 79 neutrons?

A: Mass number of element is equal to  sum of number of proton to number of neutron.  Hence for a atom…

Q: atomic number 119 and mass number of 252  where would this element be placed? What period would it…

A: Ununennium   Ununennium, also known as eka-francium or element 119, is the hypothetical…

Q: Which statement about subatomic particles are false? Protons have about the same mass as neutrons.

A: An atom is made up of subatomic particles which are protons, neutrons and electrons.

Q: The total number of subatomic particles (protons, electrons, and neutrons) in an atom of 75Ge is…

A: Given:An atom 75Ge __ 75 is the mass number

Q: What is the mass number of an atom of calcium that has 21 neutrons?

A: We know ,  Mass number of an atom = number of proton + number of neutron

Q: An Se atom has a mass number of 78. How many neutrons does it have?

A:

Q: An atom containing 19 protons, 20 neutrons, and 19 electrons has a mass number of?

A: Given, Number of protons = 19 Number of electrons = 19 Number of neutrons = 20

Q: What is the difference between protons and neutrons?

A: We have to write the difference between protons and neutrons.

Q: Antimony Sb has two stable isotopes 121 Sb (at mass 120.904 amu) with a natural abundance of 57.36 %…

A:

Q: What are the different mass numbers of Isotopes ?

A: Different mass numbers of Isotopes are explained below,

Q: What is the mass number of an element that contains 25 protons, 22 electrons, and 20 neutrons?

A: The given data contains, Number of protons = 25. Number of electrons = 22. Number of neutrons = 20.

Q: How many neutrons are there in an atom of iron with a mass number of 52?

A:

Q: What is the mass number of potassium-39? What is the isotope’s charge?

A: Given atom,      Potassium-39   For a neutral atom, atomic number = Number of protons = Number of…

Q: How many protons and neutrons are in the nucleus of Kr-80?

A:

Q: These masses of subatomic particles may be useful for the following question(s). electron 0.00055…

A: Given:: Mass of Cl-37=36.9659 amu mass of proton=1.0073 amu mass of neutron=1.0087 amu mass…

Q: Define the terms Neutrons, Protons, and Nucleus?

A: The atom has three fundamental particles known as neutron, proton, and electrons.

Q: What is the mass number for an atom of nickel containing 28 protons and 34 neutrons?

A: To find out mass number of Nickel Atom having 28 protons and 34 neutrons.

Q: What would be the approximate mass of a particle that has 48 electrons, 46 neutrons and 52 protons?

A: No of electrons = 48 No of neutrons = 46 No of protons = 52

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.