quantum mechanics

Which rule has been violated in the configuration 1s²2s²2p⁶ 3s²3p⁶3d¹4s²2?

Aufbau Principle

How many valence electrons does Gallium (Ga) have?

3

Which transition results in the absorption of energy?

n=2 to n=5

Which element has the same number of valence electrons as Oxygen (O)?

Sulfur (S)

What period is [Ne]3s²3p⁶ found in?

3

How many unpaired electrons does Nitrogen have?

3

How many orbitals does the 5th energy level have?

25

True or False: Elements in the same group have the same number of energy levels.

False

What element is represented by [Kr]5s²4d¹5p²?

Antimony (Sb)

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶?

Krypton

What is true about the element Phosphorus?

It has 5 valence electrons in the 3s and 3p sublevels.

True or False: Elements within the same period have the same number of valence electrons.

False

Identify the type of orbital shown with two dumbbell-shaped clouds.

p orbital

Given [Ar]4s²3d⁹, what block is the element found in?

d

How many valence electrons does Tin (Sn) have?

4

Which is the correct orbital diagram for Oxygen?

Two paired electrons in 2p and two unpaired in 2p.

Which rule is violated if two electrons in an orbital have the same spin?

Pauli Exclusion Principle

Which is true in terms of energy: 4s < 3d?

True

How many electrons can the 3rd energy level hold?

18

How many valence electrons does [Kr]5s²4d¹05p³ have?

4

How many orbitals does a p sublevel have?

A p sublevel has 3 orbitals.

How many sublevels does the n=3 energy level have?

The n=3 energy level has 3 sublevels: s, p, and d.

How many electrons can accommodate the n=4 energy level?

The n=4 energy level can accommodate a maximum of 32 electrons.

How many orbitals does the d sublevel have?

A d sublevel has 5 orbitals.

How many electrons can accommodate the f sublevel?

The f sublevel can accommodate a maximum of 14 electrons.

What is the shape of the p orbital?

The p orbital has a dumbbell shape.

How many orbitals does an f sublevel have?

An f sublevel has 7 orbitals.

For a Calcium atom, what does the configuration end in?

The electron configuration for Calcium ends in 4s2.

For a P atom, what does the configuration end in?

The electron configuration for Phosphorus ends in 3p3.

For a V atom, what does the configuration end in?

The electron configuration for Vanadium ends in 3d3.

What element is located in period 3, group 2?

The element located in period 3, group 2 is Magnesium (Mg).

How do you determine the number of Valence Electrons?

The number of valence electrons can be determined by looking at the outermost electron shell of an atom.

Define Valence Electrons.

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

What is the name of the rule that says electrons are singly added to orbitals of equal energy before pairing up begins?

This rule is known as Hund's Rule.

What is the name of the rule that says orbitals are filled in order of increasing energy?

This rule is known as the Aufbau Principle.

What is the name of the rule that states no two electrons can have the same set of quantum numbers?

This rule is known as the Pauli Exclusion Principle.

How many unpaired electrons are in Nitrogen?

Nitrogen has 3 unpaired electrons.

What period is the element in for the configuration 2s22p3?

The element is in period 2.

What block is the element in for the configuration 5s24d105p5?

The element is in the p block.

How many valence electrons are in the configuration 6s24f4?

There are 6 valence electrons.

Identify the element for the configuration 1s2 2s2 2p6 3s2 3p5.

The element is Chlorine (Cl).

Identify the element for the configuration [Ar]4s2 3d8.

The element is Nickel (Ni).

Identify the element for the configuration [Kr] 5s2 4d10 5p3.

The element is Antimony (Sb).

Identify the element for the configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1.

The element is Francium (Fr).

Write the electron configuration for Sulfur (S) in unabbreviated form.

The unabbreviated electron configuration for Sulfur is 1s2 2s2 2p6 3s2 3p4.

Write the abbreviated electron configuration for Osmium (76).

The abbreviated electron configuration for Osmium is [Xe] 6s2 4f14 5d6.

Write the orbital notation for Platinum (Pt).

The orbital notation for Platinum is [Xe] 6s2 4f14 5d9.

Write the electron configuration for Iron (Fe) in unabbreviated form.

The unabbreviated electron configuration for Iron is 1s2 2s2 2p6 3s2 3p6 4s2 3d6.