Q: A photon of green light has a wavelength of 520 nm. What is the energy of this photon? Use $$h = 6.626 \times 10$$^{-34}$$ \ \mathrm{Js}$$ and $$c = 3.00 \times 10^8$ \ \mathrm{m/s}.$$

$$3.82 \times 10$$^{-19}$$ \ \mathrm{J}$$

Q: A microwave oven emits radiation at a frequency of $$2.45 \times 10^9$\ \mathrm{Hz}. $$What is the energy of a single photon emitted by the oven? ($$h = 6.626 \times 10$$^{-34}$$\ \mathrm{Js})$$

$$1.62 \times 10$$^{-24}$$\ \mathrm{J}$$

Question 1

Which region of the electromagnetic spectrum has the highest energy per photon?

Accepted Answer

Gamma rays

Question 2

A photon of green light has a wavelength of 520 nm. What is the energy of this photon? Use $$h = 6.626 	imes 10$$^{-34}$$ \ \mathrm{Js}$$ and $$c = 3.00 	imes 10^8$ \ \mathrm{m/s}.$$

Accepted Answer

$$3.82 	imes 10$$^{-19}$$ \ \mathrm{J}$$

Question 3

Which quantum number determines the shape of an atomic orbital?

Accepted Answer

Angular momentum quantum number ($$l)$$

Question 4

What is the maximum number of electrons that can occupy the $$d$$ orbitals in a single energy level?

Accepted Answer

10

Question 5

Which of the following electron configurations represents a violation of the Pauli Exclusion Principle?

Accepted Answer

$$1s^2$$\ $$2s^2$$\ $$2p^6$$\ $$3s^2$$\ $$3p^6$$\ $$4s^2$$\ $$3d^{11}$$

Question 6

Which element has the highest electronegativity?

Accepted Answer

Fluorine

Question 7

Which of the following ions is largest in size?

Accepted Answer

$$F^-$$

Question 8

Which of the following molecules has a trigonal pyramidal molecular geometry?

Accepted Answer

$$NH_3$$

Question 9

What is the hybridization of the central atom in $$CH_4$$?

Accepted Answer

$$sp^3$$

Question 10

Which of the following bonds is the strongest?

Accepted Answer

Triple bond

Question 11

A molecule has 4 electron dense areas and 2 lone pairs on the central atom. What is its molecular geometry?

Accepted Answer

Bent

Question 12

Which of the following statements about sigma ($$\sigma) $$and pi ($$\pi) $$bonds is correct?

Accepted Answer

A triple bond consists of one sigma and two pi bonds

Question 13

What is the formal charge on nitrogen in $$NH_4$$^+$$?

Accepted Answer

+1

Question 14

Which of the following molecules violates the octet rule?

Accepted Answer

$$SF_6$$

Question 15

Which of the following best describes the bonding in metallic solids?

Accepted Answer

Sea of delocalized electrons

Question 16

Which of the following is a radical?

Accepted Answer

$$NO$$

Question 17

What is the electron configuration for copper ($$Cu$$)?

Accepted Answer

$$[Ar]\ 4s^1$\ 3d$$^{10}$$

Question 18

Which of the following best explains why $$F_2 is a $$nonpolar molecule?

Accepted Answer

It is composed of two identical atoms sharing electrons equally

Question 19

Which of the following best describes the trend in atomic size across a period from left to right?

Accepted Answer

Atomic size decreases

Question 20

A microwave oven emits radiation at a frequency of $$2.45 	imes 10^9$\ \mathrm{Hz}. $$What is the energy of a single photon emitted by the oven? ($$h = 6.626 	imes 10$$^{-34}$$\ \mathrm{Js})$$

Accepted Answer

$$1.62 	imes 10$$^{-24}$$\ \mathrm{J}$$

Exam 4 Review: Electromagnetic Waves, Quantum Numbers, Electron Configuration, and Chemical Bonding

Study Guide - Practice Questions

Study Guide - Flashcards