why is that in Pb(CrO4)2, the charge of CrO4 is -2

Q: 3. Oxygen has an atomic number of 8, an atomic mass of 16, and it is neutrally charged.

A:

Q: How many neutrons are in 60Co2+

A:

Q: Naturally occurring Metal with average atomic mass 79.7231 consists of two isotopes: 79M with mass…

A:

Q: 1. How many calories are released when 100. g of steam condenses? The heat of condensation for water…

A: Given: Mass of water = 100 g The heat of condensation for water = 540 Cal/g

Q: 3. How many protons (P), neutrons (N) and electrons (e) are present in Os² that has mass number 190…

A: Given that  Atomic no of element = 79

Q: What monatomic ions do potassium (Z=19) and iodine (Z=53) form?

A: Ion formation- Valence electrons are the electrons are present in last shell of an atom,which can…

Q: 4. Complete the following table. Symbo # 206pb Mn²+ Net Protons Neutrons Electrons Charg le 31 52 38…

A: Here we are required to find the number of subatomic particle of different element

Q: Is the statement inconsistent with Rutherford’s nuclear theory as it was originally stated? Why? A…

A: Given statements, A phosphorus atom has 15 protons in its nucleus and 150 electrons outside of its…

Q: What is the number of neutrons in I-131?

A: Given, Element : I-131 Number of neutrons = ? Note: In the modern periodic table, iodine (I) belongs…

Q: The difference between 7°Br and 81Br is their number of: neutrons electrons protons

A: We have to predict the difference between given atoms.

Q: Titanium has five common isotopes: 46 Ti (8.0%), 47 Ti (7.8%), 48Ti (73.4%),49Ti (5.5%), 50Ti…

A:

Q: What monatomic ions would you expect radium (Z = 88) and selenium (Z = 34) to form?

A: Monoatomic ions: These are the ions that consist of atoms of only one kind of element. The…

Q: (c) 35 (d) 13 3. In the periodic table, if oxygen were assigned an atomic weight of one, what would…

A: given, atomic weight of O is assumed to be 1

Q: Solve this

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: 3. which description most accurately describes neptium -239? a. mass number=93, atomic number=239 b.…

A:

Q: Which of the following atoms has the same number of neutrons as ⁵⁹Ni?

A: ⁶⁰Cu has the same number of neutrons as ⁵⁹Ni

Q: The element X has two naturally occurring isotopes: X50 (relative abundance = 30.15%, mass = 50.3)…

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

Q: what is the atomic number for 37Cl with a charge -1

A: Given that, Cl-37 Charge = -1

Q: 1H, 2H, and 3H are examples of ________ because they have different numbers of ________.…

A:

Q: The element gallium (Ga, Z = 31) is what type of element

A: Atomic number of Gallium(Ga) is 31.Electronic configuration is [Ar] 3d104s24p1.It is a p- block…

Q: 27. How many electrons does 207Pb+2 have? a. 80 b. 82 С. 84 d. 125 28. How many electrons does Ga+3…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: On a mission to a newly discovered planet, an astronaut finds gallium abundances of 60.11 %% for…

A: The average atomic mass of an element can be calculated as shown below.

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

A: The substances that have a tendency to occupy space are considered as matters. The matters can be…

Q: 6a Kami Uploads they? 6. Which element has the longest name? Which element has the shortest name?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Give the A, Z and neutron of an element whose symbol is Cf

A: Given, The element Cf=Californium,

Q: What monatomic ions do barium (Z=56) and selenium (Z=34) form?

A: Monoatmic ion is an ion which consist only one atom if it consist greater than one atom than it will…

Q: Atoms that vary in the number of neutrons found in their nuclei are called ________. a. ions b.…

A: Atoms are fundamental and smallest unit of chemical element. It contains protons, neutrons, and…

Q: An atom of 131 I contains ________ protons.

A: An atom = 131I  Number of protons = ?

Q: Calculate the mass and charge of 1. nucleus of atomic N 2. singly ionized Na2+

A:

Q: How many protons, electrons, and neutrons, respectively, does 129Cs have?

A: Since we know that  Mass Number = Number of Protons + Number of neutrons  And  Atomic Number =…

Q: Calucate the atomic mass: Titanium: Ti-46 (7.9 %), Ti-47 (7.3 %), Ti-48 (73.9 %), Ti-49 (5.5 %),…

A: Given data : Ti-46 = 7.9 % Ti-47 = 7.3 % Ti-48 = 73.9 % Ti-49 = 5.5 % Ti-50 = 5.4 %

Q: 1. A car is moving with a velocity of 65 km/hr. How many miles would it travel in 35 sec. (1 mile…

A: Mathematical calculation is shown below

Q: calculate the charge of each particle'' Pb(CrO4)2

A: Given Pb(CrO4)2 To find  The individual charges of each element in the given formula.

Q: What is the overall charge of ^65Cu

A: An atomic number of an atom is equal to the number of protons in it. The atomic number is…

Q: 8. Use isotope notation to show a. chromium-54 b. strontium-84

A: Isotopes can be defined as the variants of chemical elements that possess the same number of protons…

Q: How many neutrons does the Fe-56 isotope contain? (a) 26 (b) 30 (c) 56 (d) 112

A: An atom contains three sub-atomic particles named as protons, electrons  and neutrons. Protons are…

Q: What element has a mass number of 9 and has five neutrons in its nucleus?

A:

Q: The radius of a Niobium atom is 143 pm(b) The mass of a single niobium atom is 1.54×10-22 g. Suppose…

A: Given here,the radius of a Niobium atom is = 143 pm1 pm = 1e-12 m1 m = 100 cmSo,Diameter of 1…

Q: What aspect of an element does the number of neutrons solely determine? its mass its identity its…

A: Number of neutron fixed in an element

Q: The most common iso 8 neutrons.

A: The mass of an atom is majorly decided by the number of protons and neutrons present in the nucleus…

Q: An element's most stable ion forms an ionic compound with bromine, having the formula XBr3. If the…

A: Given: 1) Ionic compound with bromine is=XBr3 2) Mass number of an element is = 225 3) Number of…

Q: 1. explain what happens to an atom when the number of protons, neutrons, or electrons changes, while…

A: 1) If you change the number of protons in an atom, you will change the atom from one object to…

Q: calculate the charge of each particle Sn(MnO4)2

A: Charge on each particle in Sn(MnO4)2 is determined as

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why?…

A: Rutherford's nuclear theory is based on three key points- (a) The nucleus is the core of the atom,…

Q: 8.How many protons, neutrons and electrons are present in" Sn 119 2+

A: In an element, atomic number of element is equal to number of protons.  While in neutral element…

Q: Rubidium has two naturally occurring isotopes, rubidium-85 (atomic mass = 84.9118 amu; abundance =…

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

Q: Which contains 7 neutrons? B 13 28 Si

A:

Group 14 Elements

The following elements come under group 14 of the periodic table.