Suppose that one of Millikan’s oil drops has a charge of −4.8×10−19 C.How many excess electrons does the drop contain?

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

A: The element carrying dissimilar neutrons number or atomic mass which might be more or less than its…

Q: How many Hydrogen atoms are there? 4H,0 O 2 O 8

A: 4H2O Hydrogen atom-H Oxygen atom-O

Q: (a) Describe Rutherford's experiment and how it led to the structure of the atom. How was he able to…

A: a)

Q: hydrogen phosphide can be decomposed to give phosphorus and hydrogen in a mass ratio of 10.32:1.00.…

A: the molecular formula of this substance is PH3 and the name of this compound will be phosphine.

Q: Consider the following hypothetical atoms: 130 64 1X has 62 electrons and 1Y has 78 electrons.…

A:

Q: During nuclear decay a 238 U atom can break apart into a helium 4 atom and one other atom. Assuming…

A: In the problem statement it is given that 238U undergoes nuclear decay to give a helium-4 atom and…

Q: The atomic weight of Ga is 69.72 amu. There are only two naturally occurring isotopes of gallium: 69…

A: Given atomic weight of Ga is 69.72 amu

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: Two compounds of Cl and X are found to have molecular masses and % Cl, by mass, as follows: 137…

A: In first compound, Cl is 77.5 % and the total mass of the compound is 137 u. Calculate the mass of…

Q: Calculate the mass, in grams, of each sample. a. 1.1 x 10 gold atoms b. 2.82 x 102 helium atoms c.…

A: Calculate the mass in grams of each sample  (a) 1.1 x 1023 gold atoms (b) 2.82 x 1023  helium atoms…

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: A. Hom C. Compound Cat B. 22 p, 20 n, and 20 e D. 22 p, 18 n, and 18 e. 40 Q6. How many protons,…

A: Q6. Given,            Ca2+2040Required,                  Number of protons, neutrons and electrons…

Q: How many electrons make up a charge of 56nC? If these are made of copper atoms, how many atoms would…

A: The charge is always quantized. The number of electrons can be determined as follows: Number of…

Q: the number of copper atoms in 3.0 g lump of copper is 2.8 x 1022. how many electrons are present in…

A: Given: Number of copper atoms in 3.0 g lump of copper is 2.8 x 1022.

Q: A pure copper sphere has a radius 0.944 in. How many copper atoms does it contain? [The volume of a…

A:

Q: Explain Millikan’s oil drop experiment and how it led to the measurement of the electron’s charge.…

A: A closed chamber whose sides are transparent is attached with two metal plates that are parallel to…

Q: 5. Calculate the average atomic mass of Nitrogen (verify in the periodic table) 14N 14.003 u 99.6%…

A: Given,  14N      14.003 u         99.6% 15N      15.000 u          0.4%

Q: An unknown element X has the following isotopes: 25X (80.50% abundant, mass = 25.03 amu) and 27X…

A: isotopes of X 25X: abundance - 80.50%                       (P1) = 80.50/100 = 0.8050          mass…

Q: What is identity of an ion having 32 protons, 30 electrons and 40 neutrons?

A: Given : number of protons = 32 number of electrons = 30  and number of neutrons = 40

Q: An unknown element X has the following isotopes: ⁵²X (90.00% abundant), ⁴⁹X (8.00% abundant), ⁵⁰X…

A: The approximate atomic mass of element x is calculated as,

Q: Give 3 examples of minerals that forensic geologists commonly encounter in soil samples. Give the…

A: Soil contains many essential minerals that are used in further technologies. These minerals are…

Q: An element X has the following masses and % abundance. 35X  (34.97 amu 75.8%) and 37X ( 36.99amu…

A: Answer :- amu (atomic mass unit) - It is the unit to express the atomic mass.  % abundance - It is…

Q: An unknown element X has the following isotopes: ²⁵X (80.50% abundant, mass = 25.03 amu) and ²⁷X…

A:

Q: What is the mass of 1 mole of calcium atoms? (the values may be rounded differently than your…

A: 1 mole of calcium atom means 1 atom of calcium.

Q: 1. Titanium has five common isotopes: 46TI (8.000%, 45.95 amu), 47TI (7.800%, 46.95 amu), 48Tİ…

A: Average atomic mass is the weighted average of atomic masses of all the naturally occurring isotopes…

Q: Imagine an alternate reality. The Thomson cathode ray experiments arrived at a charge to mass ratio,…

A: Here, we have to determine mass of electron.

Q: Fill in the gaps in the following table, assuming each column represents a neutral atom: 1 3 4 112…

A: For an atom,    Mass number = no.of protons + no.of neutrons    Atomic number = no.of protons No.of…

Q: When radium becomes an ion, what is its charge? O There is not enough information to answer this…

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

Q: Consider a hypothetical case in which the charge on a proton is twice that of an electron. Using…

A: We need to consider the hypothetical case where the charge on the proton is twice than that of an…

Q: Fill in the gaps in the following table,assuming each column represent a neutral atoms. Symbols…

A: Given table: Symbol 65 Zn         Protons 38 38     92 Neutrons 58 58 49     Electrons…

Q: Imagine an alternate reality where the Thomson cathode ray experiments arrived at an electron charge…

A: The given information are:

Q: A platinum atom has a radius of 177 pm. If you could string platinum atoms like beads on a thread,…

A: Given that, Radius of Pt-atom = 177 pm =177×10-12 m= 177×10-10 cm =1.77×10-8 cm Length of necklace =…

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: A hypothetical element exists as two isotopes: I = 92.00 amu and II = 98.00 amu. If the atomic mass…

A: Suppose fraction of isotope I = A Fraction of isotope II = (1 - A) Atomic mass = A x atomic mass of…

Q: 1. Titanium has five common isotopes: 46TI (8.000%, 45.95 amu), 47TI (7.800%, 46.95 amu), 48TI…

A: Given :  Abundance of Ti-46 = 8.000 %  Abundance of Ti-47 = 7.800 %  Abundance of Ti-48 = 73.40 %…

Q: Which of the following compounds is a nonelectrolyte? Select one: O a. acetic acid, CH3COOH b.…

A: A nonelectrolyte is a substance that will not form ions when dissolved in water and therefore the…

Q: The smallest unit of charge is −1.6×10−19 C, which is the charge in coulombs of a single electron.…

A: Which one gives a whole number after you divide by -1.6x10^-19C since the electron has the smallest…

Q: Question attached

A: Atomic mass: It defined as the mass of the atom that is present in an element expressed in terms of…

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

A:

Q: What does an atom gain or lose when ions are produced? A)protons B)neutrons C)electrons

A: Option (C)

Q: The smallest unit of charge is -1.6 x 10-19 C, which is the charge in coulombs of a single electron.…

A:

Q: Consider a hypothetical case in which the charge on a proton is twice that of an electron. Using…

A: Atomic number of potassium is 19 and mass number is 39

Q: Fill in the gaps in the following table, assuming each columnrepresents a neutral atom.

A: Given,

Q: A sample of an ionic compound containing iron and chlorineis analyzed and found to have a molar mass…

A: Given molar mass = 126.8 g/mol The iron and chlorine containing compound Molar mass of Fe = 55.8…

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: A hypothetical element exists as two isotopes: I = 68.00 amu and II = 71.00 amu. If the percent…

A:

Q: An unknown element X has the following isotopes: ⁵²X (79.50% abundant), ⁴⁹X (8.00% abundant), ⁵⁰X…

A:

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,…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.