Atomic + Molecular Structure

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

What did Dalton’s Atomic Theory state?

Back (Answer)

• All elements are composed of atoms • Atoms of 1 element differ from atoms of other elements • All compounds of composed of different atoms • No destruction/construction of atoms

Front (Question)

Protons weigh about

Back (Answer)

1 amu

Front (Question)

The atomic # (or Z) equals to the

Back (Answer)

Number of protons

Front (Question)

The further the valence electron is from the nucleus the

Back (Answer)

Weaker the attraction is between the electron and the nucleus

Front (Question)

Rutherford stated that the atom has a

Back (Answer)

Densely-charged nucleus which accounts for a small portion of the volume

Front (Question)

Planck developed the first quantum theory, proposing that

Back (Answer)

Energy is emitted as electromagnetic radiation in quanta

Front (Question)

What is the energy of a quantum?

Back (Answer)

E = h • f

Front (Question)

What is the angular momentum (L) according to the Bohr model?

Back (Answer)

L = nh / 2π

Front (Question)

The energy of the electron is given by

Back (Answer)

E = -Rh / n^2

#10

Front (Question)

The energy of an electron is related to the

Back (Answer)

Orbital radius

#11

Front (Question)

The smaller the radius means the

Back (Answer)

Lower the energy

#12

Front (Question)

What is the electromagnetic energy of protonss?

Back (Answer)

E = h•c / wavelength

#13

Front (Question)

Each element maintains its own

Back (Answer)

Atomic emission spectrum

#14

Front (Question)

The Lyman series describes emission to

Back (Answer)

n = 1 (UV)

#15

Front (Question)

The Balmer series describes emission to

Back (Answer)

n = 2 (UV + Vis)

#16

Front (Question)

The Pascher series describes emission to

Back (Answer)

n = 3 (Inf)

#17

Front (Question)

What is the equation to find energy level transitions?

Back (Answer)

E = -Rh (1/ni^2 - 1/nf^2)

#18

Front (Question)

The pauli exclusion principle states that

Back (Answer)

No 2 electrons in a given atom have the same 4 quantum numbers

#19

Front (Question)

The max number of n correlates to the

Back (Answer)

Number of the period

#20

Front (Question)

The larger the n the

Back (Answer)

Higher the energy level + radius

#21

Front (Question)

The max number of electrons in a SHELL is denoted by

Back (Answer)

2n^2

#22

Front (Question)

As the distance from the nucleus increases, the

Back (Answer)

Difference in energy between adjacent shells decreases

#23

Front (Question)

The azimuthal quantum number (l) ranges from

Back (Answer)

0 to n-1

#24

Front (Question)

When l = 0, the orbital is

Back (Answer)