Chem/Phys

Question 1

Planck Equation (frequency)

Answer 1

E=hf

Question 2

Angular momentum

Answer 2

L=nh/2pi

Question 3

Energy of an electron

Answer 3

E=-Rh/n^2

Question 4

Energy of an electron transition

Answer 4

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

Question 5

Maximum number of electrons in a shell

Answer 5

2n^2

Question 6

Maximum number of electrons within sub shell

Answer 6

4L+2

Question 7

What is alpha decay?

Answer 7

Nucleus rejects an alpha particle (He nucleus)

Question 8

What is beta negative decay?

Answer 8

Nucleus emit e- and anti neutrino in process that changes neutron to proton

Question 9

What is beta positive decay?

Answer 9

Nucleus emits positron and neutrino in process that changes proton to neutron (positron emission)

Question 10

What is gamma decay?

Answer 10

Nucleus decay by emission of an alpha or beta particle. Daughter nucleus is left in excited state and can decay to lower energy state by emitting a gamma ray photon.

Question 11

What is the Henderson-Hasselbach equation?

Answer 11

pH=pKa + log ([HA]/[A-])