Which of the following element is in period 4 Zr He Ca Bi Ag Ca Bi Ag

Q: An imaginary element has two naturally occurring isotopes and has an average atomic mass of 150.2…

A: The relative abundance of each isotope is calculated using equation (1) in which mavg is the average…

Q: In which set of elements would all members be expected to have very similar chemical properties?

A: Cu, Ag, Au is the correct option.  Elements belonging to the same group of similar chemical…

Q: The mass of 6 million molecules of a diatomic gas is 5.1  × 10-19 kg. What is the atomic mass of the…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Which elements are alkaline earth metals?(a) rubidium(b) tungsten(c) magnesium(d) cesium(e)…

A: Alkaline earth metals are the elements present in the group 2 of the periodic table. Their general…

Q: 1. A sample of magnesium has the following isotopic abundances: Isotopic mass (amu) 23.99 24.99…

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Q: Which element is a row 4 noble gas? (a) Ne (b) Br (c) Zr (d) Kr

A: The rows or periods of a periodic table are made up of elements with the same number of electron…

Q: B. Indicate which of the following statements is TRUE or FALSE. If your answer is FALSE kindly…

A: a. An element’s atomic number is equal to the number of protons in the nuclei of any of its atoms.…

Q: ö: j y- :0 :0 :0= :o:

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Q: An element 'A' contains 4 protons, 4 electrons and 5 neutrons. it is + 1. It becomes when it has 4…

A: For a neutral atom, the number of electrons or protons is equal to its atomic number. The mass…

Q: 23U → 23Th + He 2. For each element, what do the top (superscripted) and the bottom (subscripted)…

A: Introduction: In the above reaction nucleus of uranium undergoes alpha decay ,in this nuclear change…

Q: Q7. Which element is a row 4 noble gas?(a) Ne (b) Br (c) Zr (d) Kr

A: Noble gases are also known as inert gases. These include He, Ne, Ar, Kr, Xe and Rn.

Q: 4. How are isotopes of the same element alike? How are they different? 5. Natural lithium comes in…

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Q: What elements are in the same GROUP! O O, F Na, Mg O N, P O Al, Si

A: The elements in the periodic table of elements are arranged in Groups and Periods according to their…

Q: 10. Which of the following choices consists of a pair of isotopes? (A) 14C and 14N (B) 2³Na and…

A: Isotopes are variants of chemical elements which differ only in the number of neutron and…

Q: I would like help with this question please. Thank you in advance!

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Q: 5. What are (i) mass, (ii) charge and (iii) location in the atom of each of the following sub-atomic…

A: Given sub-atomic particles, (a) Electron (b) Neutron (c) Proton

Q: A particular element exists in two stable isotopic forms. One isotope has a mass of 34.969 u (75.77%…

A: Given,Mass of one isotope (m1) = 34.969u.Abundance = 75.77% = 0.7577.Mass of second isotope (m2) =…

Q: An example of an element is chicken noodle soup powerade air inside a balloon lead pipe baking soda…

A: An element is a pure form of substance in which all atoms have same number of proton so here we see…

Q: Q5. Which element is a halogen?(a) Ne (b) O (c) Ca (d) I

A: Halogen belongs to 17 groups of the periodic table. Halogens are gaseous in nature. Halogens are…

Q: Potassium naturally consists of 93.10% K-39 and 6.90% K-41. K-39 has an atomic mass of 38.963707…

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Q: Solve this

A: We need to find which of these options is true for single atom of a substance.

Q: A sample of gallium contains two isotopes and its atomic weight is 69.72 amu. If the sample is…

A: Isotopes can be defined as the members of same family having same atomic number but different mass…

Q: Element X has 5 isotopes. One of the isotopes has a mass of 120.6 with an abundance of 8.4%. The…

A: Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by…

Q: Which group of three elements contains a transition metal, a halogen, and noble gas? a) S, I, Cu b)…

A: Since the Halogen elements are F, Cl, Br, I, At And noble gases are He, Ne, Ar, Kr, Xe, Rn

Q: A fictitious element X has a molecular weight of 9.46 g/mol. If the volume occupied by one atom of…

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Q: A neutral isotope has 45 protons and 36 electrons identify the element symbol of this isotope in…

A: Isotopes of an element have same number of protons with different number of neutrons in the nucleus.…

Q: 13. Which pair represents isotopes? a. He and »He b. seFe and sa:Mn c. Si and suP 14. Which pair…

A: Identify isotopes pair among them --

Q: Which element is not a main-group element?a) Se                      b) Mo                     c) Sr…

A: Main-group elements: S-block and P-block elements are knows as main-group elements. They are,…

Q: Which pair of atoms constitutes a pair of isotopes of the same element? O ax 6' 19 19 O b. 10 20X…

A: Isotopes are the species that contains same number of electrons and protons but different number of…

Q: Complete the table Symbol of element Atomic Mass number Number of Number of Number of protons (+) a)…

A: Solution This is a pretty simple question if you have a periodic table handy. Use the Table of…

Q: 8 C N 3 12 13 14 15 16 Transition elements Mg Al Si P 26 28 29 Fe Ni Cu 47 50 Ag Sn Questions and…

A: The question is based on periodic properties of the elements. we have been given certain elements.…

Q: 11. At death, a nobleman in ancient Egypt was mummified and his body contained 1.4 x 10 3 g of…

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Q: What element is x? O Mercury O Bromine O Rhodium O Xenon O Ytterbium

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Q: 6. The element magnesium has three naturally isotopes. Given the following information calculate the…

A: Certain metal in period table have more than 1 isotope with different relative abundance  Here We…

Q: A certain element has a density of 7.19 g cm3 . A cube of this element with a side of 2.00 cm…

A: Given,Density of unknown element = 7.19cm3Cubic side of the element = 2.00cmNumber of atoms = 6.66 ×…

Q: Which element does not belong with the other four? 8O 18Ar 17C l7N 53I A) O B) Ar C) Cl D) N…

A: The element  that does not belong with the other four is given below

Q: Give the name corresponding to each element symbol: (a) Ne; (b) S; (c) I; (d) Si; (e) B; (f) Hg, (g)…

A: (a) Ne = Neon   (b) S : Sulfur or Sulphur   (c) I : Iodine   (d) Si : Silicon

Q: Which two elements on the periodic table are in the same period? OH, Na O B, Ga OK, Sc He, Ne

A: Which two elements on the periodic table are in the same period = ?

Q: 5. A sample of Magnesium contains three isotopes and its average atomic weight is 24.35 amu. If the…

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Q: An element has three naturally occurring isotopes with the following masses and abundances: Isotopic…

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Q: State one similarity and one difference between the isotopes of tin.

A: Given : Isotopes of Tin To find: One similarity and one difference between the isotopes of tin…

Q: Potassium occurs naturally as two isotopes. The heavier isotope has percentage abundance of 93.1.…

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Q: One isotope of an element has a mass of 65.183 amu and 72.23% natural abundance. Another isotope has…

A: Assume an element is X,  one of Isotope of X is X1 atomic mass is 65.183 amu and natural abundance…

Q: What would be the isotope symbol for an atom with 35 protons, 35 electrons and 46 neutrons? 46 Br 35…

A: Isotopes are the atoms of same element which differ in number of neutrons but have same number of…

Q: A fictitious element Z has an average atomic mass of 223.67 u.223.67 u. Element Z has two naturally…

A: Given: Atomic mass of element Z = 223.67 u There are only 2 naturally occurring isotopes of element…

Q: Write isotopic symbols in the form AZX for each isotope.a. the copper isotope with 34 neutronsb. the…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: An isotope of lead (Pb) has 122 neutrons. The mass number of this isotope is a. 204 b. 82 c. 288…

A: The solution is as follows :

Q: Which of the following statements is TRUE, and why? A. Anions are usually larger than their…

A: A. Anion: It is the negatively charged species which has more number of electrons than protons.…

Q: An isotope has 16 protons and 18 neutrons. What is the isotopic symbol and what’s the isotopic mass?…

A: Given :-  A) no. of protons = 16  no. of neutrons = 18  B)  No. of protons = 53  no. of neutrons =…

Q: Most of the elements in the periodic table are O metals O non-metals O metalloids gases

A: Metalloids - Elements which have properties intermediate of metals and non-metals.  Metals - They…