Tuesday, August 21, 2012

chemistry





In which system do molecule-ion attractions exist?

*A. NaCl(aq)
B. NaCl(s)
C. C6H12O6(aq)
D. C6H12O6(s)


 A particle accelerator can increase the kinetic energy of

*A. An alpha particle and a beta particle
B. An alpha particle and a neutron
C. A gamma ray and a beta particle
D. A neutron and a gamma ray


What is the total number of electrons needed to completely fill all of the orbitals in an atom's second principal energy level?


A. 16
B. 2
*C. 8
D. 4

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