Chem #5

What is defined as the distance between identical points on successive waves?

Wavelength

What is defined as the number of waves that pass through a particular point in one second?

Frequency

What is the wavelength of light having a frequency of 4.8 x 10^14 s^-1 (c=3.0 x 10^8 m/s)?

630 nm3.0x10^8 m/s x 1sec/4.8x 10^14 s6.3 x10^-7nm=10^-9630 nm

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

radio, infrared, ultraviolet, gamma rays

The size of an atomic orbital is associated with

the principal quantum number (n)

The shape of an atomic orbital is associated with

The angular momentum quantum number (l)

Atomic orbitals developed using quantum mechanics describe

regions of space in which one is most likely to find an electron

Which of the following is a correct set of quantum numbers for an electron in a 3d orbital?

n=3, l=2, ml=-2

No two electrons in an atom can have the same four quantum numbers" is a statement of

The Pauli exclusion principle

The number of orbitals in a d subshell is

5

What is the name given to the statement "the most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with the same spin is maximized"?

Hund's rule

The orbital diagram for a ground-state nitrogen atom is

(2) arrow 1s (2) arrow 2s (3) single arrow 2p

The orbital diagram for a ground state oxygen atom is

2 double arrow-1s2 double arrow-2s2 double arrow + 2 single arrow -2p

Which ground state atom has an electron configuration described by the following orbital diagram?[Ar] 4s2 3d10 4p4

Selenium

How many unpaired electrons does a ground state atom of sulfur have?

2

Which element has the following ground state electron configuration?1s2 2s2 2p6 3s2

Mg

which of these choices is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

Ns2

The general electron configuration for noble gas atoms is

ns2np6

Select the correct electron configuration for sulfur (Z=16)

1s2 2s2 2p6 3s2 3p4

The electronic structure 1s2 2s2 2p6 3s2 3p6 4s2 3d8 refers to the ground state of

Ni

Which of the elements listed below has the greatest atomic radius?

Al

Which of these elements has the highest first ionization energy?

As

Which ion is isoelectronic with Ar?

Ca2+

Which of these choices is the electron configuration of the iron (III) ion?

[Ar] 3d5

which of these compounds is a basic oxide?

CaOMetal oxides-basic

A nonpolar covalent bon (ie..pure covalent) would form in which of these pairs of atoms?

Br--Br

What types of elements undergo ionic bonding?

A nonmetal and a metal

Which of these atoms is the most electronegative?

P

Arrange aluminum, nitrogen, phosphorus and indium in order of increasing electronegativity?

In<Al<P<N

Which one of these elements is a transition element?

Fe