RHS CHEM: Unit 4 Ch 4-6, 25

Of these elements, which is a nonmetal?  

Which element has the highest electronegativity value? 

In which of these sets is the symbol, # of Protons and # of Electrons correct? 

Which statement applies to nuclear fusion? 

Which discovery did JJ Thomson make that improved upon Dalton's atomic theory?

All atoms are ...

What is the approximate half-life of uranium-238?

Isotopes of the same element have different 

Which of the following equals one atomic mass unit? 

How many unpaired electrons are in a sulfur atom, which has the atomic number of 16?

Which of these electron configuration results in an element that is relatively inactive?

The atomic mass of an element is the ___.

What particle is emitted in alpha radiation? 

The atomic emission spectra of a sodium atom on earth and on the sun would be...

What is the final product of a sequence of spontaneous nuclear decay reactions? 

Who arranged the elements according to atomic mass and predicted properties of new elements?

The sum of the protons and neutrons in an atom equals the ___? 

What does neutron absorption accomplish in a nuclear reactor?

How do energy differences between higher energy levels compare to differences between  lower?

What particle is needed to complete this nuclear reaction?  Radon-222 changes to polonium-218?

The nucleus of an atom is...

All atoms of the same element have the same ___?

The majority of elements are...

The quantum mechanical model of the atom...

Evidence about Dalton's Atomic Theory has shown that 

How is the number of neutrons in the nucleus of an atom calculated? 

Which of the following statements is true about ions?

Which of these statements correctly compares the size of an ION to it's neutral atom? 

Which element has the electron configuration of 1s²2s²2p⁶3s²3p⁵4s¹

How are radioactive isotopes used to diagnose thyroid problems? 

In Bohr's model of the atom, where are the electrons and protons located?  

How does the radiation from radio-isotopes cause damage to human tissue? 

The mass number of an element is equal to ___.  

How are radioisotopes used in radiation therapy for cancer? 

Emission of light from an atom occurs when an electron 

As you move from L to R on the second Period of the PT...

The metals electron configurations in groups 1 A-3A change to halogens when...

Which of the following is the same as a beta particle? 

If the spin of one electron in an orbital is clockwise, what is the other electron's spin? 

Which of the following contributes to decrease in Ionization Energy in a group on the PT. 

How does the energy of an electron change when the electron moves closer to the nucleus? 

What particle does argon-39 (at # 18) emit when it decays to potassium-39 (at # 19)?

What is the maximum number of orbitals in the p sublevel

Which variable is directly proportional to frequency? 

The principal quantum number indicates what property of an electron? 

Which of the following elements is in the same period as phosphorous?  

The most penetrating form of radiation is...

Which subatomic Particle plays the greatest part in determining the properties of an element?

the atomic number of an element is the total number of which particles  in the nucleus?

What does the number 84 in krypton-84 represent? 

How many energy sublevels are in the second principal energy level (2nd row)?