Electromagnetic Radiation and Atomic Structure Review

These flashcards cover key concepts from electromagnetic radiation and atomic structure based on the provided lecture notes.

What frequency corresponds to the longest wavelength?

The lowest frequency, which is 5.66 x 10^8 Hz.

Which evidence supports the claim that light is a wave?

Evidence II: When light shines through a double slit, a pattern of bright and dark lines appears.

When the intensity of photons striking a metal is increased, what happens?

More electrons are ejected from the metal.

Which photon has the longest wavelength based on energy values?

E = 6 x 10^-21 J has the longest wavelength.

What is the wavelength of radiation from an MRI machine operating at 30 kHz?

1 x 10^5 m.

Which transition represents the absorption of red light?

Transitions involving lower energy levels (higher wavelengths) represent red light absorption.

Why must we consider the wave properties of an electron?

The wavelength of the electron is similar in size to the atom and affects its properties.

Which quantum numbers are not allowed?

A) n = 4, l = 2, ml = -2, ms = +1/2 is allowed; E) n = 3, l = 1, ml = 2, ms = +1/2 is not allowed.

How many electrons can be found in a single d orbital?

A d orbital can hold a maximum of 10 electrons.

What is the electron configuration for Te?

B) [Kr]5s^24d^105p^4.

How many core and valence electrons does Te have?

36 core and 16 valence electrons.

What trend does atomic radius exhibit across a row in the periodic table?

Atomic radius decreases from left to right.

Which atom is larger, Si or S?

S (sulfur) is larger than Si (silicon).

Which ion is larger, K+ or Cl–?

Cl– is larger because anions are always larger than cations.

Which of the following ions has the same number of electrons?

Mg2+, O2-, and Na+ all have the same number of electrons.

What charge will sulfur commonly form?

Sulfur commonly forms a -2 charge.

What is the maximum number of electrons found in the n=4 energy level?

The maximum number of electrons in the n=4 energy level is 32.

Which of the following transitions would release the largest quantum of energy?

n = 3 → n = 1 releases the largest quantum of energy.

What is the effective nuclear charge of Carbon?

+4.

What happens when an electron is added to an atom?

It becomes negatively charged, forming an anion.

What is the electron configuration for Al3+?

C) [Ne].

What is the electron configuration for S2-?

E) [Ar].