Chemistry, 01.10.2019 00:50 Weser17

What does the pauli exclusion principle state?

a) electrons will be added to an atom at the lowest possible level or sublevel.

b) an orbital can contain two electrons only if all other orbitals at that sublevel are empty.

c) an orbital can contain two electrons only if all other orbitals at that sublevel contain at least one electron.

d) two electrons occupy the same orbital only if they have opposite spins.

e) an orbital can contain two electrons only if all other orbitals at that sublevel are empty.

Answers: 1

Show answers

Answers

Answer from: taykola

C) An orbital can contain two electrons only if all other orbitals at that sublevel contain at least one electron.

Answer from: shamiahG

Answer : The correct option is, (D) Two electrons occupy the same orbital only if they have opposite spins.

Explanation :

Pauli Exclusion Principle :

Pauli Exclusion Principle states that no two electrons present in an atom or a molecule can have the same set of the four quantum numbers.

It can also stated that, only two electrons may exist in the same orbital and these electrons must have opposite spin.

That means if two electrons have same value of three quantum number i.e, n, l and m but the forth quantum number that is spin quantum number is different for them.

Both the two electrons have opposing spins having value either $\frac {1}{2}$ or $\frac {-1}{2}$ .

Hence, the correct option is, (D) Two electrons occupy the same orbital only if they have opposite spins.

Answer from: Quest

What are the choices?

Answer from: Quest

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

Another question on Chemistry

Chemistry, 22.06.2019 09:00

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Answers: 3

Answer

Chemistry, 22.06.2019 12:00

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients

Answers: 1

Answer

Chemistry, 22.06.2019 16:00

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Answers: 3

Answer

Chemistry, 22.06.2019 18:30

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Answers: 2

Answer

You know the right answer?

What does the pauli exclusion principle state?

a) electrons will be added to an atom a...

Questions