Atomic Structure

Question 1

Energy of an electron

Answer 1

1.6 x 10^-19 C

Question 2

Atomic number (Z)

Answer 2

Amount of protons

On top of the element

Question 3

Mass number

Answer 3

Protons & neutrons in the atom’s nucleus

Question 4

Isotopes

Answer 4

Different mass numbers, bc different numbers of neutrons

Question 5

Where are atomic mass and atomic number placed on an element?

Answer 5

Atomic mass

Atomic number

Question 6

Atomic mass

Answer 6

in amu, of one atom, nearly equal to its mass number

Question 7

Atomic weight

Answer 7

Weighed average of different isotopes

Question 8

Lyman series

Answer 8

Transitions from greater than or equal to 2 down to 1

Question 9

Balmer series

Answer 9

Transitions from greater than or equal to 3 down to 2

Question 10

Paschen series

Answer 10

Transitions from greater than or equal to 4 down to 3

Question 11

A positive E in electron emission corresponds to?

Answer 11

Emission

Question 12

Heisenberg uncertainty principle

Answer 12

Impossible to simultaneously determine the momentum & position of an electron

Question 13

Bohr model of electrons

Answer 13

Electrons are fixed in orbit

Question 14

Quantum model of electron

Answer 14

Electrons move around localized areas of orbitals

Question 15

Pauli exclusion principle

Answer 15

No 2 electrons in a given atom can posses the same set of 4 quantum numbers
Each has their own energy state, position, size & shape & orietation

Question 16

What does a larger principal quantum number mean?

Answer 16

Larger energy level & radiu of electron shell

Question 17

Energy difference between shells decreases when?

Answer 17

The shells are further from the nucleus

Question 18

Parallel spins

Answer 18

different orbial, same ms value

Question 19

Aufbau/building up principle

Answer 19

Electrons fill each subshell completely before filling the next one

Question 20

What is the n value for those in the d block

Answer 20

n-1

Question 21

What is the n value for those in the f block

Answer 21

n-2

Question 22

Hund’s rule

Answer 22

Within a given subshell, each orbital is filled with max number of half-filled orbitals with parallel spins

Question 23

Which orbitals have higher stability?

Answer 23

Full & half-filled orbitals , may move up in electron orbital to fill half or full

Question 24

Paramagnetic

Answer 24

Half filled electrons shells are slightly attracted to a magnetic field

Question 25

Dimagnetic

Answer 25

Fully filled electrons shells slightly repel magnetic field

Question 26

Electrons that are usually the valence electrons?

Answer 26

Usually in the s & particular subshell