What is the mass number of this isotope?

What is the mass number of this isotope?
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Assertion (A) : Half life of a radioactive isotope is the time required to decrease its mass number by half Reason (R ) : Half life of radioactive iso

Description : Assertion (A) : Half life of a radioactive isotope is the time required to decrease its mass number by half Reason (R ) : Half life of radioactive iso

Last Answer : Assertion (A) : Half life of a radioactive isotope is the time required to decrease its mass number by half ... . If both (A) and (R ) are incorrect.

If an isotope of silicon has 15 neutrons what is the mass number?

Description : If an isotope of silicon has 15 neutrons what is the mass number?

Last Answer : Need answer

The atomic number of uranium is 92 and its atomic mass is 238.how many neutrons does the most common isotope of uranium have.?

Description : The atomic number of uranium is 92 and its atomic mass is 238.how many neutrons does the most common isotope of uranium have.?

Last Answer : The most common isotope of uranium is uranium-238 with 146 neutrons.

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Description : An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Last Answer : Mass number = proton number + neutron number SO, Mass number(Aluminium) = 13+ 14 =27

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Description : An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Last Answer : Mass number = proton number + neutron number SO, Mass number(Aluminium) = 13+ 14 =27

The half life of radioactive isotope is 3 hour. If the initial mass of isotope were 256 g, the mass of it remaining undecayed after 18 hr is a)12 g b)

Description : The half life of radioactive isotope is 3 hour. If the initial mass of isotope were 256 g, the mass of it remaining undecayed after 18 hr is a)12 g b)

Last Answer : The half life of radioactive isotope is 3 hour. If the initial mass of isotope were 256 g, the mass of it remaining ... 4 g B. 8 g C. 12 g D. 16 g

How many protons and neutrons are in the nucleus of isotope with mass of 68.926?

Description : How many protons and neutrons are in the nucleus of isotope with mass of 68.926?

Last Answer : p,n =31,38P=31 (from Periodic Table)N= 68.926-31=37.926

What type of decay involves only the release of high-energy photons and therefore does not change the mass of an atom of a radioactive isotope?

Description : What type of decay involves only the release of high-energy photons and therefore does not change the mass of an atom of a radioactive isotope?

Last Answer : High-energy photons are gamma rays; the decay is called gamma decay. Please note that the mass of an atom DOES change, since a loss of energy is accompanied by a loss in mass.

The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: w) 0.312 grams x) 0.625 grams y) 1.25 grams z) 2.50 grams

Description : The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: w) 0.312 grams x) 0.625 grams y) 1.25 grams z) 2.50 grams

Last Answer : ANSWER: X -- 0.625 GRAMS

How many protons will remain when cobalt isotope with atomic number 27 losses 3 electrons?

Description : How many protons will remain when cobalt isotope with atomic number 27 losses 3 electrons?

Last Answer : 110 to 114

The isotope `._(92)^(235)U` decays in a number of steps to an isotope of `._(82)^(207)Pb`. The groups of particle emitted in this process will be:

Description : The isotope `._(92)^(235)U` decays in a number of steps to an isotope of `._(82)^(207)Pb`. The groups of particle emitted in this process will be:

Last Answer : The isotope `._(92)^(235)U` decays in a number of steps to an isotope of `._(82)^(207)Pb`. The groups ... C. `7 alpha, 4 beta` D. `10 alpha, 8 beta`

The isotope atoms differ in - (1) number of neutrons (2) atomic number (3) number of electrons (4) atomic weight

Description : The isotope atoms differ in - (1) number of neutrons (2) atomic number (3) number of electrons (4) atomic weight

Last Answer : (1) number of neutrons Explanation: Important to note that isotope atoms have same atomic number.

Heavy water is so called because it contains - (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms

Description : Heavy water is so called because it contains - (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms

Last Answer : (1) Heavy isotope of hydrogen Explanation: Heavy water, formally called deuterium oxide, is a form of "water that contains a larger than normal amount of the hydrogen isotope deuterium, (also known as ... ) rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water.

Heavy water is so called because it contains (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms

Description : Heavy water is so called because it contains (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms

Last Answer : Heavy isotope of hydrogen

What is the difference between an isotope and an ion?

Description : What is the difference between an isotope and an ion?

Last Answer : A: An isotope is an atom of an element with a different number of neutrons, while an ion is an atom or molecule with a net electrical charge due to the loss or gain of one or more electrons.

Is the decay of a radioactive isotope predictable (causally determined) or not?

Description : Is the decay of a radioactive isotope predictable (causally determined) or not?

Last Answer : At this point it seems to be a result of quantum indeterminacy. In other words, since the Heisenberg uncertainty principle is in effect at that level, all we can determine is probability (hence a predictable ... , it is deterministic and we will (hopefully) one day be able to understand it as such.

The isotope deuterium of hydrogen has : -Science

Description : The isotope deuterium of hydrogen has : -Science

Last Answer : Hydrogen has no neutron, deuterium has one, and tritium has two neutrons. The isotopes of hydrogen have, respectively, mass numbers of one, two, and three.

Which isotope of uranium capable of sustaining chain reactions? -Do You Know?

Description : Which isotope of uranium capable of sustaining chain reactions? -Do You Know?

Last Answer : answer:

What is the half-life of carbon 12 isotope ?

Description : What is the half-life of carbon 12 isotope ?

Last Answer : Carbon -12 is a normal atom. It is not radioactive. C- 14 is radioactive. Its half -life is 5,630 years

Which isotope is used in the treatment of leukemia ?

Description : Which isotope is used in the treatment of leukemia ?

Last Answer : Phosphate of phosphorus 32 is used in the treatment of leukemia .

Which Isotope Destroys Cancer Cells ?

Description : Which Isotope Destroys Cancer Cells ?

Last Answer : : The isotope cobalt _60 destroys cancer cells.

What is the difference between isotope and isobar ?

Description : What is the difference between isotope and isobar ?

Last Answer : Isotopes are different forms of the same atom , so that the mass numbers are different. And isobars are atoms of different elements with the same mass. So isotopes will have many similarities in basic properties , but there may be no similarities between isobars.

What is the isotope of chlorine ?

Description : What is the isotope of chlorine ?

Last Answer : : The number of isotopes of chloris is 2

What are the properties of isotope ?

Description : What are the properties of isotope ?

Last Answer : It has the same atomic number but different neutron and mass numbers.

What is radio isotope used for ?

Last Answer : Radioisotope is used in goiter

What is an isotope ?

Last Answer : Atoms that have the same number of protons but different numbers of masses and neutrons are called isotopes of each other.

The isotope of carbon used extensively for studies in photosynthesis is

Description : The isotope of carbon used extensively for studies in photosynthesis is

Last Answer : The isotope of carbon used extensively for studies in photosynthesis is A. `C^(13)` B. `C^(14)` C. `C^(15)` D. `C^(16)`

The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On 1st July, 2006, it was found that only 0.

Description : The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On 1st July, 2006, it was found that only 0.

Last Answer : The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On ... days B. 30 days C. 25 days D. 50 days

The `t_(1//2)` of a radionuclide is 8 hours. Starting with 40 g of the isotope, the amount in gm remainig after one day will be:

Description : The `t_(1//2)` of a radionuclide is 8 hours. Starting with 40 g of the isotope, the amount in gm remainig after one day will be:

Last Answer : The `t_(1//2)` of a radionuclide is 8 hours. Starting with 40 g of the isotope, the amount in gm remainig after one day will be:

(A) The archaeological studies are based on the radioactive decay of carbon-14 isotope. (R ) The ratio of C-14 to C-12 in the animals of plants is the

Description : (A) The archaeological studies are based on the radioactive decay of carbon-14 isotope. (R ) The ratio of C-14 to C-12 in the animals of plants is the

Last Answer : (A) The archaeological studies are based on the radioactive decay of carbon-14 isotope. (R ) The ratio of C ... D. If both (A) and (R ) are incorrect.

A photon of gamma radiation knocks out a proton from `""_(12)Mg""^(24)` nucleus to form a)The isotope of parent nucleus b)The isobar of parent nucleus

Description : A photon of gamma radiation knocks out a proton from `""_(12)Mg""^(24)` nucleus to form a)The isotope of parent nucleus b)The isobar of parent nucleus

Last Answer : A photon of gamma radiation knocks out a proton from `""_(12)Mg""^(24)` nucleus to form a)The isotope of ... )Na` D. the isobar of `._(11)^(23)Na`

`._(13)Al^(27)` is a stable isotope. `._(13)Al^(29)` is expected to disintegrate by

Description : `._(13)Al^(27)` is a stable isotope. `._(13)Al^(29)` is expected to disintegrate by

Last Answer : `._(13)Al^(27)` is a stable isotope. `._(13)Al^(29)` is expected to disintegrate by A. ... B. `beta`-emission C. positron emission D. proton emission

Which radioactive isotope is used to detect tumours?

Description : Which radioactive isotope is used to detect tumours?

Last Answer : Which radioactive isotope is used to detect tumours? A. `.^(74)As` B. `.^(24)Na` C. `.^(131)I` D. `.^(60)Co`

The `.^(60)C` isotope decays with a half life of 5.3 years. How long would it take for 7/8 of a sample of 500 mg of `.^(60)Co` to disintegrate?

Description : The `.^(60)C` isotope decays with a half life of 5.3 years. How long would it take for 7/8 of a sample of 500 mg of `.^(60)Co` to disintegrate?

Last Answer : The `.^(60)C` isotope decays with a half life of 5.3 years. How long would it take for 7/8 of a sample ... B. 15.9 years C. 10.6 years D. 5.3 years

When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus `._(15)^(30)P` with the emission of …. Is formed

Description : When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus `._(15)^(30)P` with the emission of …. Is formed

Last Answer : When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus ` ... A. neutrons B. protons C. positrons D. electrons

A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of the isotopes in the container. The

Description : A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of the isotopes in the container. The

Last Answer : A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of ... 48 g B. 36 g C. 24 g D. 12 g

The unstable isotope of hydrogen is …..

Description : The unstable isotope of hydrogen is …..

Last Answer : The unstable isotope of hydrogen is ….. a. H-1 b. H-2 c. H-3 d. H-4

What isotope has 12 protons and 13 neutrons?

Description : What isotope has 12 protons and 13 neutrons?

Last Answer : Need answer

When an isotope is blank it is radioactive?

Description : When an isotope is blank it is radioactive?

Last Answer : When an isotope is unstable, it is said to be radioactive.

What During blank an unstable isotope breaks down into a stable isotope?

Description : What During blank an unstable isotope breaks down into a stable isotope?

Last Answer : It is by radioactive decay that unstable isotopes break down into stable isotopes.

Is deuterium an isotope?

Description : Is deuterium an isotope?

Last Answer : Having only one proton deuterium has the atomic number 1, ashydrogen; but because deuterium has also and a neutron, the atom isdifferent compared to the atom of hydrogen. Consequently deuteriumis an isotope of hydrogen with the Atomic Mass 2.

When does an isotope undergo radioactive decay?

Description : When does an isotope undergo radioactive decay?

Last Answer : An atom of a given isotope will undergo radioactive decay whenever it feels like it. No joke. The nucleus of a radioactive isotope is unstable. Always. But that atom has no predictable moment ... to decay, except that those with very short half lives will pretty much disappear relatively quickly.

What daughter product is produced when thallium-206 an isotope of thallium undergoes beta minus decay?

Description : What daughter product is produced when thallium-206 an isotope of thallium undergoes beta minus decay?

Last Answer : This isotope is lead-206.

What type of isotope is used for drug metabolism studies?

Description : What type of isotope is used for drug metabolism studies?

Last Answer : It will depend on the chemical structure of the drug and therate of metabolism. The most common isotopes that are used to "tag"drug molecules are tritium (3-H), carbon-14 (14-C), andphosphorous-32 (32-P). Other isotopes are also used, but these areprobably the most common.

How many neutrons are in an isotope of chlorine 36?

Description : How many neutrons are in an isotope of chlorine 36?

Last Answer : Chlorine-36 has 19 electrons.

How many neutrons does isotope krypton 86 have?

Description : How many neutrons does isotope krypton 86 have?

Last Answer : Feel Free to Answer

What are the purposes of isotope labeling?

Description : What are the purposes of isotope labeling?

Last Answer : Isotopes are variants of a particular chemical element whichdiffer in neutron number, although all isotopes of a given elementhave the same number of protons in each atom. Isotope VariationAnalysis ( ... used, they can be detected by theradiation they emit (this is called radioisotopic labeling).

If the heaviest isotope was more abundant and the other two isotopes were less abundant what would happen to the atomic weight of beanium?

Description : If the heaviest isotope was more abundant and the other two isotopes were less abundant what would happen to the atomic weight of beanium?

Last Answer : What is the answer ?

What fraction of an original sample of a radio isotope remains after 3 half-life periods?

Description : What fraction of an original sample of a radio isotope remains after 3 half-life periods?

Last Answer : One eighth remains.

How many neutrons does a isotope of hydrogen have?

Description : How many neutrons does a isotope of hydrogen have?

Last Answer : Need answer