Atomic Structure

Question 1

e/m of electron

Answer 1

1.758 x 10^11 C/kg
1.758 x 10^8 C/g

Question 2

1 mole of electrons = ______C

Answer 2

96500 C = 1 Farad

Question 3

Mass of electron

Answer 3

9.11 x 10^-31 kg
9.11 x 10^-28 g

Question 4

Mass of electron in amu

Answer 4

0.00016 amu

Question 5

1 mol of e- weight

Answer 5

0.00056g

Question 6

Proton is how much heavier than electron

Answer 6

1840x heavier

Question 7

e/m anodic is proprotional to

Answer 7

1/m

Question 8

Anodic rays are kept in _________ pressure

Answer 8

0.01 torr

Question 9

Positive rays give flash on

Answer 9

ZnS

Question 10

e/m of anodic rays

Answer 10

9.54 x 10^7 C/kg

Question 11

Mass of protons

Answer 11

1.67 x 10^-27 kg
1.67 x 10^-24 g

Question 12

Angular momentum of Bohr’s atomic model

Answer 12

nh/2π

Question 13

Rydberg’s constant

Answer 13

1.097 x 10^7 m-1

Question 14

aº constant =

Answer 14

0.529 Aº

Question 15

aº in terms of protons

Answer 15

n² / z

Question 16

Ionization energy constant (and formula)

Answer 16

2.18 x 10^-18 J/atom
(z² e^4 m / 8∂² h² n²)

Question 17

1 mol of H atom energy

Answer 17

1312.31 kJmol-1

Question 18

Differences in energy gets ________ as the distance/shells increase

Answer 18

smaller

Question 19

Ryderberg constant FORMULA

Answer 19

1/wavelength = (z² e^4 m / 8∂² h^3 C) (1/n1² - 1/n2²)

Question 20

H spectrum series order

Answer 20

LBPBPf

Question 21

H spectrum light types

Answer 21

L (Lyman) = UV
B (Balmer) = UV / Visible
P (Paschen) = Infrared
B (Brackt) = Infrared
Pf (Pfund) = Infrared

Question 22

Which is the most energetic on the H spectrum series

Answer 22

Lyman

Question 23

Stuff to find from Principle Quantum number (n)

Answer 23

n = number of standing waves
n² = number of orbitals
2n² = no of e- distributed in shell

Question 24

Things to find from Azimuthal Quantum Number (l)

Answer 24

4l + 2 = no of columns in periodic table
n-l-1 = radial node

Question 25

S P D F stands for

Answer 25

S = Sharpe
P = Principle
D = Defused
F = Fundamental

Question 26

Magnetic Quantum numbers for S P D F

Answer 26

S = 0
P = -1 (Py), 0 (Pz), +1 (Px)
D = -2 (Dxy), -1 (Dyz), 0 (Dz²), +1 (Dxz), +2 (Dx² - y²)
F = -3, -2, -1, 0, +1, +2, +3

Question 27

Paul’s exclusion law

Answer 27

Spin must be different (opposite spins) (OPP)

Question 28

Hund’s Rule

Answer 28

If more orbitals are available then arrange e- on separate orbitals with same spin (Like if you have two hands open then hold some of the stuff in your other hand)

Question 29

Auf Bau Law

Answer 29

Fill all subenergy levels with low “n+l” values (ABC of levels)