Question

11. The electron configuration of an atom

a. is determined by the amount of kinetic energy present

b. is found by calculating atomic mass

c. is written as s,p,d,f subshells

d. describes the specific distribution of electrons in a subshell

____12. The Pauli exclusion principle states that

a. any atom with a free s orbital can form bonds

b. no two atoms can occupy the same orbital unlesstheir spins are different

c. 2 atoms sharing an orbital are matched exactly

d. atoms of the same configuration do not change

_____13. In water molecules, how many oxygen atom(s) combine with hydrogen atoms?

a. 1                                     b. 2                            c. 3                            d. 4

______14. Reduction is the process

a. calculating the oxidation number of oxygen

b. increasing the oxidation number ok oxygen

c. losing hydrogen or electrons in a reaction

d. gaining hydrogen or electrons in a reaction

_____15. Gold with 79 protons has an atomic number of

a. 52                                  b. 57                         c. 67                         d. 79

Answer 1

11. The electron configuration of an atom describes the specific distribution of electrons in a subshell .(option d)

Electronic configuration is the distribution of electrons in the atom of an element.

12. The Pauli exclusion principle states that no two atoms can occupy the same orbital unless their spins are different. (option b)

13. In water molecules, 1 oxygen atom(s) combine with hydrogen atoms. (option a)

14. Reduction is the process gaining hydrogen or electrons in a reaction. (Option d)

15. Gold with 79 protons has an atomic number of 79. (Option d)