Atomic structure Questions and Answers

3 Using the Bohr Diagram in your reference packet answer the following questions a What is the wavelength of light emitted when an electron moves from n 3 to n 1 b What is the type of light emitted

Dr Laila Malik has been tasked to help her graduate student with making a ground breaking molecule but she has to start with helping the student understand how different elements bond to each other and the characteristics they have Help Dr Malik identify the correct structure of this molecule TiCl 4 CI CI TI4 CI CI CI

The energies E for the first few states of an unknown element are given in the table in arbitrary units 1 2 3 4 11 5 2 1 11 E Photon A A gaseous sample of this element is bombarded by photons of various energies in these same units Match each photon to the result of its absorption or lack thereof by an n 1 electron B C D Energy 11 9 8 6 Result 0000 0 Answer Bank n 1 to n 3 not absorbed electron ejected n 1 to n 4 n 1 to n 2

A few different types of electromagnetic radiation are listed in the table below Complete the table by ordering these types of radiation by increasing frequency wavelength and energy per photon For example select I in the second column for the type of radiation with the lowest frequency 2 for the type of radiation with the next higher frequency and so forth type of radiation blue light X rays red light Infrared radiation order of frequency Choose one Choose one Choose one Choose one order of wavelength Choose one Choose one Choose one Choose one order of energy Choose one Choose one Choose one Choose one

2 11 Why is a molecule of CO nonpolar even though the bonds between the carbon atom and the oll oxygen atoms are polar 1 The shape of the CO2 molecule is symmetrical 3 The CO2 molecule has a deficiency of electrons The shape of the CO2 molecule is asymmetrical 4 The CO2 molecule has an excess of electrons

21 Rank the following bonds from the strongest to the weakest Make 1 the strongest and 6 the weakest Van der Waal Forces Ionic Bonds Single Covalent Bonds Double Covalent Bonds Hydrogen Bonds 3 Triple Covalent Bonds

31 Which statement explains why H O has a higher boiling point than N 1 H O has greater intramolecular forces than N 3 H O has stronger intermolecular forces than N binor inal diod E 2 H O has less intramolecular forces than N vino 4 H O has weaker intermolecular forces than N2

O isotopes O ions of the same element must have different numbers of neutrons electrons O electron orbitals shells valences

What is the mass number of an isotope with an atomic number of 55 and that has 67 neutrons

The mass number of an element is equal to 1 The number of neutrons in an atom 2 The number of electrons in an atom 3 The number of protons in an atom 4 The number of isotopes in an atom 5 The number of protons and neutrons in an atom

Which of the following always increases as you move from left to right across a row in the periodic table Atomic number Number of neutrons O Number of isotopes Atomic mass

How many valence electrons are in an atom of chlorine

1 Jeannie is an experienced business traveler often traveling back and forth from San Francisco to the East Coast several times per month To catch her flights from San Francisco she leaves her office one hour before her flight leaves Her travel time from her office to the departing gate at the San Francisco airport including the time to park and go through security screening is normally distributed with a mean of 46 minutes and a standard deviation of 5 minutes What is the probability that Jeannie will miss her flight because her total time for catching her plane exceeds one hour 0 0017 0 0026 0 0059 000137

Q16 Which one of the following is an incorrect orbital notation A 4f B 2d A NaCl and Ca NO3 2 C 3s D 2p D None of them Q17 Which reactants will produce a precipitate when mixed in aqueous solution B BaCl and Na3PO4 C NaOH and HCI

Q4 What is the frequency s of radiation that has a wavelength of 459 nm A 6 54 x 10 B 6 54 x 10 C 1 53 10 Q5 Which one of the following is not a redox reaction A 2H 02H O Oza C BaCl K CrOBaCrO KCl B 2 16 x 10 m D 18 10 V B Na 3H 2NH D 2Al Fe O Al O 2Fe Q6 What are the reacting ions when Pb NO and NaCl react in aqueous solution A Pb Cit B Na NO C Pb NO D Na Cl Q7 The correct order of increasing in the first ionization energy A B Be N O D B O Be N C B Be O N B Be B N O Q8 What is the A of light that is emitted when an excited electron in the hydrogen atom falls from n 7 to n 47 A 4 45 x 10 m C 9 18 x 100 m D 2 16 x 10 m

What is the maximum number of electrons a g orbital 2 There is no such thing as a g orbital 18 9 can hold