1.)chlorine Express your answer as an ion. 2.)cesium Express your answer as an ion 3.)gallium Express your answer as an ion.

Q: What is the formula of the compound in which the atom combining ratios are: silicon : bromine :…

A: Atoms combine in definite ratio to form a compound.  Si is group 14 element having valency 4  P…

Q: 4. How many protons, neutrons, and electrons are present in an atom of hafnium, Hf, with a mass…

A: An atom's mass number tells you the total number of protons and of neutrons that atom has in its…

Q: By the end of this module you will be able to: • · ● · • . Module 2 Atomic Structure and…

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

Q: Neon consists of three isotopes, Ne-20, Ne-21, and Ne-22. Their abundances are 90.48%, 0.27%, and…

A: GIVEN  Ne 20, Ne 21,Ne 22 are three isotope of Neon  Abundance: Ne 20 ( 90.48%) ,Ne 21 (0.27%), Ne…

Q: 5. Using the periodic table, classify each of the following elements as a metal or a nonmetal, and…

A: a)The atomic number of Co is 27Electronic configuration of cobalt is Co: 1s22s22p63s23p64s23d7It can…

Q: Calculate the mass for one nitrogen atom. Note: you can choose more than one answer. 2.33 x 10-23…

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

Q: Which of the following pairs of elements would you expect to be the most similar in both their…

A: In the periodic table, the elements are arranged according to their atomic number (electronic…

Q: Macmillan Learning, On another planet, the isotopes of titanium have the given natural abundances.…

A: Average atomic mass : The average atomic mass of an element is the sum of the atomic masses of it's…

Q: 1) i) iv) Which two substances could be metals? Which substance could be nitrogen? Which substance…

A: Hello. There are multiple subparts to the question. The first three subparts have been solved. To…

Q: Fill in the blanks below to show your results: Neutral atoms have the number of protons and…

A: Since you have asked multiple questions, we will answer only first question for you. In order to get…

Q: part a. aluminum and iodine Express your answers as ions and chemical formula separated by a…

A: Aluminum exhibit +3 valency and Iodine exhibits -1 valency  Al                     I+3↗     ↖  -1…

Q: a) An element has two naturally occurring isotopes. Isotope l has a mass of 120.9038 u and a…

A:

Q: "Lithium has two isotopes. Lithium-6 has an actual mass of 6.015 g/mol and lithium-7 has a mass of…

A: Given: There are two naturally occurring isotopes of lithium. Molar mass of isotope 1 i.e. lithium-6…

Q: 21) Vanadium has two naturally occurring isotopes, 50V with an atomic mass of 49.9472 amu and 51v…

A:

Q: 25.  The average atomic masses of some elements may vary, depending upon the sources of their ores.…

A: Given,Actual mass of naturally occurring boron 10B, 10.0129 amu and 11B, 11.00931 amu.The actual…

Q: The three isotopes of a naturally occurring mystery element X are 39X, 38.963707 amu; 40X, 39.963999…

A: Isotopemasspercent of natural abundance39X38.963707 amu93.2581 %40X39.963999 amu[100 - (93.2581 +…

Q: A lead atom has a radius of 177 pm. To cover a distance of 2.17 mm, how many lead atoms would have…

A:

Q: Iron exists in nature as a mixture of predominantly three isotopes: 54 Fe (53.94 amu), 56 Fe (55.93…

A:

Q: 5) Elements in the last column of the periodic table are called, 6) What distinguishes one element…

A: 5. Elements in the last column of the periodic are called Noble gases 6. The atoms of the element .…

Q: QUESTION 1 If the atomic number of an element is 12 and its atomic mass is 25; you could conclude…

A: Given values are., Atomic number = 12 Atomic mass=25

Q: Element X has two naturally occurring isotopes,  65X(isotopic mass  64.7471 amu, abundance 28.49%)…

A: Given : Element X has 2 naturally isotopes. Mass of isotope 65X = 64.7471 amu Abundance of 65X =…

Q: Please help answer this

A:

Q: Element R has three isotopes. The isotopes are present in 0.0825, 0.2671, and 0.6504 relative…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: Let’s say you were doing an experiment on two different chemicals in two different test tubes. One…

A: The completion of a chemical reaction is indicated by several means. One of the means which is used…

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A: 1.Average atomic mass is the weighted average mass of the sample that occure in nature.  2. Here the…

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A: The average atomic mass of an element is the weighted average mass of the atoms in a naturally…

Q: 4. A solution of 100.00 mL of 0.2000 mol/L sodium carbonate and 200.00 mL of 0.1000 mol/L calcium…

A: Concentration of sodium carbonate (Na2CO3) solution = 0.2000 mol/litre  Volume of sodium carbonate…

Q: Atmospheric argon is a mixture of three stable isotopes 36Ar, 38Ar, and 40Ar.  Use the information…

A:

Q: Using the following data, determine the percent abundance of the third isotope and the average…

A: Percentage abundance of X-22 isotope = 52.3985%Percentage abundance of X-23 isotope =…

Q: 14. Selenium-75 is used in the diagnosis of disorders related to the pancreas . How many (a) protons…

A: In a neutral atom the number of electrons and protons are same.

Q: Calculate the average atomic mass of iron: Isotope: 54Fe; 56Fe; 57Fe; 58Fe Mass (amu): 53.940;…

A: The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by…

Q: 3) Calculate the atomic mass of the following element with three isotopes (masses and relative…

A: Given information: 27.9769 u, 92.2232% 28.9765 u, 4.6858% 29.9738 u, 3.0921%

Q: An unknown element X forms a compound with chlorine: XCl2. Predict the chemical formula of the…

A: The information given is An unknown element X forms a compound with chlorine: XCl2. The chemical…