exam 2
[Kr] 5s2 4d10 5p5
What is the ngec notation for the electron configuration of an iodine atom?
3+
What is the predicted ionic charge for an Al ion?
1-
What is the predicted ionic charge of an element in Group VIIA/17?
barium flouride
What is the systematic name for BaF2?
atomic mass unit
What is the term for a unit of mass exactly equal to 1/12 the mass of a carbon -12 atom?
visible spectrum
What is the term for light energy that appears violet to red
Alpha
What particle is emitted when a Fr-210 nucleus decays to At-206?
12.5%
What percentage of the radionuclides in a given sample remains after three half -lives?
cobalt-60
What radionuclide is used to destroy microorganisms and parasites in food?
3d
Which electron sublevel follows the 4s sublevel according to increasing energy?
Sr
Which element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2?
Mn
Which element has the following electron configuration: [Ar] 4s2 3d5?
4s
Which energy sublevel is being filled by the elements K to Ca?
Cd
Which fifth period transition element has the highest atomic number?
Kr
Which fourth period representative element has the highest atomic number?
Mn
Which of the following does not have chemical properties similar to Mg? A) Ba B) Ca C) Mn D) Sr E) Cl- E) Be
Br
Which of the following is a halogen? A) Hg B) Ar C) H D) Br E) Kr
Kr
Which of the following is a noble gas?
Ca
Which of the following is an alkaline earth metal?
Cd
Which of the following is not a main-group (or representative) element?
An orbit and an orbital represent a fixed energy state.
Which of the following is true for both an orbit and an orbital? A) An orbit and an orbital always contain two electrons. B) An orbit and an orbital represent a fixed energy state. C) An orbit and an orbital can be described as elliptical. D) An orbit and an orbital represent an electron boundary. E) An orbit and an orbital are different in all respects.
Dmitri Mendeleev
Which of the following scientists is credited with first arranging the elements into groups according to increasing atomic mass and repeating properties? A) J. A. R. Newlands B) H. G. J. Moseley C) Dmitri Mendeleev D) Johann Döbereiner E) Antonine Lavoisier
monoatomic cation
The Hg2+ ion is classified as which of the following?
2
What is the maximum number of electrons that can occupy any 4f orbital?
alpha
What is the name of the particle having the following atomic notation: 42 He?
hydrogen-3
Bombarding lithium-6 with a neutron gives nuclide X and an alpha particle. What is nuclide X?
3
How many energy sublevels exist within the 3rd principal energy level?
36
How many neutrons are in the nucleus of an atom of copper -65?
4
Predict the number of valence electrons for a Group IVA/14 element.
increasing atomic mass
Previous to the X-ray emission evidence of 1913, the order of the elements in the periodic table was based on which of the following? A) increasing isotopic mass B) increasing atomic mass C) increasing atomic number D) increasing mass number E) decreasing atomic number
polyatomic anion
The selenate ion, SeO32-, is classified as which of the following?
nickel(II) sulfide
What is the Stock system name for NiS?
N2O3
What is the chemical formula for dinitrogen trioxide?
FeSO3
What is the chemical formula for iron(II) sulfite?
Sn(ClO2)4
What is the chemical formula for stannic chlorite?
Co2(SO4)3
What is the chemical formula for the compound composed of Co3+ and SO42- ions?
ClO-
What is the chemical formula for the hypochlorite ion?
Na2CO3
What is the chemical formula for the ternary compound composed of Na+ and CO32- ions?
C-12
What is the current reference isotope for the atomic mass scale?
10
What is the maximum number of electrons that can occupy a d energy sublevel?