How is iodine classified?

Q: Calculate the mass change in grams bf the copper and nickel electrodes. mass change of copper…

A:

Q: What are lanthanide elements?

A: What are lanthanide ?

Q: 40 Calculate the number of protons, neutrons, and electrons in Ca. 20

A: The number of protons, neutrons, and electrons in 20 Ca 40 can be calculated as

Q: How can rare earth elements cause water pollution?

A: In the periodic table, the rare earth elements are the elements present in the lanthanide series of…

Q: is not used to make Portland Cement a Calcareous Rocks b. Argillaceous Rocks c. Siliceous d. Sands…

A: 1.  B option is correct. CO2 Carbon dioxide is emitted as a by-product of clinker production, an…

Q: 19. What is an ion?

A: Ions constitute the ionic compounds. Sodium chloride is an example of ionic compound which contains…

Q: List the number of protons ,neutrons, and electrons for ⁴⁰Ca²

A: Atomic number (Z) :-  The number of protons present inside the nucleus of an atom is known as atomic…

Q: or selenium (#34)?

A:

Q: A period 3 element with an equal number of nucleons

A:

Q: Silver smiths are warned to limit their exposure to silver in the air to 1×10^-8 Ag/L of air in a…

A: The molar mass of Ag = 107.9 g/mol. This means 107.9 g of Ag contains Avogadro number of Ag atoms.…

Q: Discuss the importance of identifying Uranium contents and how does it affects the GR reading

A: Uranium is an element which is represented using the symbol 'U'. The atomic number of uranium is 92.…

Q: Discuss Neutron-to-Proton Ratio?

A: In an atom, the atomic number indicates the number of protons present in an atom of an element. The…

Q: Draw atomic depictions for(a) ²⁰⁷₈₂Pb; (b) ⁹₄Be; (c) ⁷⁵₃₃As

A: (a) The atomic depiction for ²⁰⁷₈₂Pb can be drawn as follows, Atomic number = Number of protons =…

Q: H-2 is a stable atom. However, H-3 is a radioactive element. Give the reason.

A: Hydrogen (Z=1) element having  three Isotopes named as Hydrogen, deuterium and tritium.

Q: What is the atomic number of potassium?     19     18     +1     15     none of…

A: Atomic number is the identity of an element, which is normally the number of proton present in it.

Q: How are Deuterium and tritium are useful/

A: Deuterium and tritium both are isotopes of element hydrogen. Furthermore, deuterium has atomic mass…

Q: Silver has two isotopes that are common  in nature. Ag - 107 and  Ag - 109. What  makesthese  two…

A: The solution is given below -

Q: a 25-mL sample of chronium-51 contains 1.00 mCi. If a paitent is to recieve a 50-uCi dose to undergo…

A: The conversion of 50-uCi to mCi is shown below:

Q: What are the rare earth elements?

A: Elements is a term that is used in chemistry for a substance i.e. pure and which consists of atoms…

Q: What is copper 70 in nuclide notation

A: A nuclide is representaion of nucleus of an element with atomic number and atomic mass number as…

Q: What is the positron emission of manganese–51

A: A nuclear reaction involves the conversion of nucleus with the emission of certain nuclei or small…

Q: 6. According to paragraph 5, "trace amounts of plutonium and neptunium have been found naturally as…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What is the composition of Radon?

A:

Q: Predict its decay pathway

A: Atomic number of Strontium (Sr) is 38

Q: What were two of the three reasons it took so long for lithium to be available for use in the United…

A: Lithium has its atomic symbol of Li. Its atomic number is 3. It is in the group of alkali metals. It…

Q: 2. These images were taken here on Earth. What do you think caused these formations?

A: As here action of water is present ,so I'm taking this in chemistry subject.   Images taken by…

Q: what is iodine 131 electronic arrangement

A:

Q: Why is Marie Curie's discovery of Polonium and Radium important? And how did it affect the world?…

A: Henry Becquerel was the one who had started working on some elements and he found some elements that…

Q: what is the chemical formula for calcium phosphate?

A: First write the name of cation and then name phosphate with their charge  For writting a compound…

Q: What is radioactivity? Indicate whether you agree or disagree with the following statement and…

A: Radioactivity is a physical phenomenon  where an element or isotopes emitting radiation…

Q: What charge would exist on chlorine (#17) after it reacts with hydrogen (#1)?

A: The correct option is(d) i.e partial negative. The electronegativity of H = 2.20  The…

Q: Oo undergoes four decay reactions: a, B, a, ß. Step 1. Po undergoes a decay to give 'Pb Step 2. Pb…

A: Given,

Q: 18 19 20 21 22 23 Write the electron configuration for a carbon anion with a charge of -1. 0 ? X 24

A:

Q: How do you figure the nuclear equation for decay for 241 Pu 94 giving off beta particles?

A: Beta decay is the radioactive process in which beta particle is emitted i.e. an electron Or a…

Q: What charge would exist on chlorine (#17) after it reacts with a rubidium atom (#37)?

A: We would check electronegativity values of determine the charge.

Q: where did the 3.18 come from?

A:

Q: How are calcium and phosphorus related?

A: In comparison with calcium, plasma phosphorus exists in both organic and inorganic forms, including…

Q: Which hydrogen isotope is radioactive?

A: Three isotopes of hydrogen are Protium(H11); deuterium(H12) and tritium(H13) Here tritium is radio…

Q: How do different isotopes of nitrogen behave similarly or differently from each other in a chemical…

A: Isotopes are elements having same number of protons but different number of neutrons.

Q: What is the electron configuration for iodine 131 isotope

A: The arrangement of electrons in an atom with increasing order of energy level is considered as…

Q: How do you figure the nuclear equation for decay for 241 Am 95 as they undergo alpha emission?

A:

Q: What is nuclear chemistry and important of nuclear chemistry

A: Radiocarbon dating ,nuclear reactor,nuclear weapons can be developed with help of nuclear chemistry.

Q: What is an alkali

A: Earlier, the alkalinity and acidity of a compound were determined by its taste. The alkali and acid…

Q: The atomic radius for radioactive radon (Rn) is Density for radioactive radon (Rn) is Boiling…

A: Radon is an element having atomic number 86. Its symbol is Rn.

Q: Assuming that a neutron star has the same density as a neutron, calculate the mass in kilograms of a…

A:

Q: What is the core charge of oxide-15

A: The atomic number of oxygen-15 = 8