gen chem 1 final

georgia southern, threatt

An atom of 31P (phosphorus-31) contains how many neutrons

16

The atomic mass of chlorine is 35.45 amu. This value is best explained

Cl is a mixture of isotopes of different mass

Which of the following is a correct ground-state electron configuration

1s22s 22p 63s 23p 5 (Cl)

An element in period 3 with 6 valence electrons i

S

how to calculate the wavelength of a photon

According to the Bohr model, light is emitted when an electro

Moves from a higher to a lower energy level

The Balmer series of hydrogen emission lines (when we see photons of specific colors emitted) appears in which region of the electromagnetic spectrum

visible

Cr (Z = 24) has the ground-state configuration [Ar]3d54s 1 rather than [Ar]3d44s 2 because:

A half-filled d subshell provides extra stability

how to find molar mass

locate the atomic mass of each element on the periodic table and multiply by the number of atoms

A compound is 75.0% C and 25.0% H by mass. Its empirical formula is

CH3