Atomic Structure Flashcard

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus

Front

Which subatomic particle has a relative mass close to 1 and no electric charge?

Back

Neutron

Front

In which set do all the species contain more electrons than neutrons? Options: 14N, 16O, 11C; 14N, 16O, 11C4-; 14N3-, 16O2-, 11C; 14N3-, 16O2-, 11C4+

Back

14N, 16O, 11C4-

Front

What is the relative atomic mass of an element with the following mass spectrum?

Back

23

Front

How are emission spectra formed?

Back

Photons are emitted when promoted electrons return to a lower energy level.

Front

In the Bohr model of the atom, which electron transition emits the most energy?

Back

From n = 2 to n = 1

Front

Condensed electron configuration of Fe2+ ion?

Back

[Ar]3d6

Front

The first ionization energies (in kJmol-1) of five successive elements in the periodic table are: 1314, 1681, 2081, 496 and 738. What could these elements be?

Back

The last two elements of one period and the first three elements of the next period

Front

The graph shows the first six ionization energies of an element. In which group is the element?

Back

13