unit 4 review

Question 1

which color of light in the visible spectrum has the longest wavelength?

Answer 1

red

Question 2

the process of an atom releasing energy when it moves to a lower energy state is called

Answer 2

emission

Question 3

the line-emission spectrum of an atom is caused by the energies released when electrons

Answer 3

“jump” from a higher energy level to a lower energy level

Question 4

according to the Bohr model of an atom, which particles are allowed to exist in any one of a number of energy levels?

Answer 4

electrons

Question 5

because excited hydrogen atoms always produced the same line-emission spectrum, scientists concluded that hydrogen

Answer 5

releases energy of only certain values

Question 6

which is a wave property that electrons possess?

Answer 6

diffraction

Question 7

how many electrons can a ‘d’ sublevel contain?

Answer 7

10

Question 8

what is the correct notation for a sublevel within the first energy level?

Answer 8

1s

Question 9

the heisenberg uncertainty principle states that it’s impossible to determine simultaneously both the — and — of an electron or any other particle.

Answer 9

position, velocity

Question 10

what is the max number of electrons that a single orbital can hold?

Answer 10

2

Question 11

elements in the s and p blocks of the periodic table are called

Answer 11

main-group elements

Question 12

an element that has the electron configuration [Ne] 3s^2sp^5 is in Period

Answer 12

3

Question 13

elements in group 18 have

Answer 13

very low reactivity

Question 14

in nature the alkali metals are found only in compounds because they

Answer 14

are very reactive elements

Question 15

an element that has the electron configuration [Ne] 3s^2sp^5 is in Group

Answer 15

17