If an isotope has 90 protons, how many neutrons are required in order for it to have a stable atomic nucleus ? What element would this be ?

Q: Stuck on this question

A: Isotopes are defined as the elements with same atomic number but different mass number. For Eg…

Q: 13. Two atoms that are different isotopes of the same element have (1) the same number of protons…

A: To complete the below statement. Statement: Two atoms that are different isotopes of the same…

Q: What is the mass number of an oxygen atom with nine neutrons in its nucleus? a) 8 b) 9 c) 17 d) 16…

A: Oxygen is a non-metal it exists as gas is nature its chemical symbol representation is  O2 it…

Q: Which of the following contains two species which have the same mass number?   14C, 14N   12C, 13C…

A: The same mass number means the same nucleons.

Q: Why are the chemical properties of all isotopes of the same element identical?

A: Atoms of the same element, having same number of protons and electrons, but differing only in the…

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

A: The above is isotope of Scandium.

Q: The element copper has two naturally occurring isotopes with masses of 62.9400 amu and 64.9300 amu.…

A: The element copper has two naturally occurring isotopes with masses of 62.9400 amu and 64.9300 amu.…

Q: Determine the number of protons and the number of neutrons in isotope. 20882Pb

A: In 20882Pb :

Q: The type of subatomic particle that has a low mass, has a negative charge, and whirls around the…

A: In atomic structure electron moves around the nucleus.

Q: What is the symbol for an isotope for each of the following requirements? containing one proton and…

A: 1) Given : isotope containing one proton and two neutrons. Atomic number of any isotope = number of…

Q: True or False? Atomic weight is equal to the number of protons and neutrons in the nucleus.

A: Given : Statement "Atomic weight is equal to the number of protons and neutrons in the nucleus"

Q: 2.28 The following radioactive isotopes are used in medicine for imaging organs, studying blood…

A: Isotopes are the nuclides which contain same atomic number but different mass number. Atomic number…

Q: uppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 73.372…

A: When an element has more than one isotope, then we will take average atomic mass to calculate…

Q: A certain element consists of two stable isotopes. The first has an atomic mass of 106.9051 amu and…

A:

Q: The average atomic mass of lithium is 6.941 amu. Lithium has two naturally occurring isotopes, 6Li…

A: Given:The average atomic mass of lithium = 6.941 amu% of Li isotopes = 6Li (7.52%) and 7Li…

Q: A theoretical element Z has two stable isotopes. One isotope is 42Z with a mass of 41.96 amu and a…

A: Mass spectrometry is an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one…

Q: Lithium has two stable isotopes: Lithium-6 and Lithium-7. Which isotope is the most abundant of the…

A: The different variants of a particular element, that are differed by the number of neutrons. In…

Q: Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu) is 48.16%. What is the…

A: Isotopes are the elements with different atomic mass (mass number) and same atomic number. Here…

Q: How many neutrons are in the nucleus of the atom 113 Cd? 48

A: We have given that  The element is cadmium    Atomic number of cadmium = 48 Given that mass of…

Q: The following table presents the abundances and masses of the isotopes of germanium. What is the…

A: Calculation of atomic weight of germanium:

Q: Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 11…

A: The symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 11 neutrons

Q: Radon is a radioactive gas that can cause lung cancer. It has been detected in the basement of some…

A: Atomic number of radon Rn = 86  Mass number of Rn-220 = 220

Q: Consider two isotopes Fe-54 and Fe-56, write the nuclear symbol for both isotope. How do they differ…

A:

Q: Which of the following statements concerning an 131I atom and a 131Xe atom is / are CORRECT? (1)…

A:

Q: A hypothetical element X is found to have an atomic mass of 37.45 amu. Element X has only two…

A: Given, Atomic mass of element X = 37.45 amu Element X consist of two isotopes- 1. X-37 2. X-38…

Q: Which of the following particles has the greatest mass?   A. photon   B. positron   C. alpha…

A:

Q: Calculate the atomic weight of antimony, which has two isotopes with the following properties:…

A: The atomic mass of an element is result of weighted average of masses of its corresponding…

Q: Which of the following has the greatest number of neutrons? O antimony-123 O tin-121 55 Fe 26 O the…

A: We know that ; Atomic number of element is equal to the number of protons in the element . ( Atomic…

Q: How many protons and neutrons are present in 118Sn4+?

A:

Q: Carbon-14 is commonly used in radiometric dating to determine the age of fossils. The atomic number…

A: for a carbon-14 atom, atomic number = number of protons = 6

Q: 4.82 For each of the following, write the symbol and name for X and the number of protons and…

A:

Q: The weight of the hypothetical element Gg is 105.99 amu. Element Gg was found to have 3 stable…

A:

Q: A certain element consists of two stable isotopes. The first has a mass of 138 amu and a percent…

A:

Q: Copper has two stable isotopes with the following atomic masses: copper-63 (atomic mass = 62.9296…

A: Given: average atomic mass of copper = 63.546 amu atomic mass of copper-63 = 62.9296 amu atomic mass…

Q: Arrange the isotopes of sulfur and phosphorus in order of decreasing the number of neutrons.

A:

Q: An isotope that contains 4 protons, 4 electrons, and 6 neutrons.

A: Atomic number (Z) is equal to number of protons Mass number (A) is the sum of number of protons and…

Q: Naturally occurring neon exists as three isotopes. 90.51% is Ne-20 with a mass of 19.99 amu, 0.27%…

A: To determine average atomic mass of Neon.

Q: A certain element consists of two stable isotopes. The first has a mass of 138 amu and a percent…

A: Given  Atomic mass of first isotope ( M1 )       = 138 amu  percentage natural abundance ( P1)     =…

Q: An atom with 30 protons, 30 neutrons and 30 electrons has an atomic number of:     30     27,000…

A:

Q: Which of the following has a different number of neutrons? a.123Sb b.125I c.120Cd d.122In

A: Which of the following has a different number of neutrons?

Q: The atomic weight of Chlorine is 35.45 and its naturally occurring isotopes are Cl-35 and Cl-37.…

A:

Q: A certain element consists of two stable isotopes. The first has a mass of 113 amu and a percent…

A: To find out the mass of the element, multiply both mass of isotopes and their natural abundance. You…

Q: Naturally occurring neon exists as three isotopes. 90.51% is Ne-20 with a mass of 19.99 amu, 0.27%…

A: Given: There are three naturally occurring isotope of Neon. Mass of isotope 1 = 19.99 amu. Abundance…

Q: A certain element consists of two stable isotopes. The first has a mass of 68.9 amu and a percent…

A:

Q: Determine the number of protons and the number of neutrons in isotope. 33P15

A:

Q: Gallium has an atomic mass of 69.723 amu. The Ga-69 (68.926 amu) is 60.11%. What is the amu of the…

A:

Q: A hypothetical element has two stable isotopes: one isotope has a mass of 106.9051 amu with an…

A: We have to calculate the average atomic mass of element.

Q: An isotope of Uranium has an atomic mass of 240. How many neutrons does this isotope have

A: mass number is the sum of number of protons and number of neutrons.