final

Question 1

light is produced as electrons _________
a. jump to a higher energy level
b. fall to a lower energy level
c. are removed
d. are added to an atom

Answer 1

b. fall to a lower energy level

Question 2

electrons vary in their____
a. shape
b. size
c. energy
d. all of the above

Answer 2

d. all of the above

Question 3

How do you determine the number of core electrons?

Answer 3

subtract valence e- from total e-

Question 4

What is the electron configuration of Co+2?

Answer 4

1s2 2s2 2p6 3s2 3p6 3d7

Question 5

What is the noble gas configuration of Co+2?

Answer 5

[Ar]3d7

Question 6

how do you do noble gases

Answer 6

it HAS to be the one before

Question 7

What is the noble gas configuration of Se-2?

Answer 7

[Ar] 4s2 3d10 4p6

Question 8

What is the noble gas configuration of Tc?

Answer 8

[Kr] 4d5 5s2

Question 9

What is the noble gas configuration of Cl-1?

Answer 9

1s² 2s² 2p⁶ 3s² 3p⁶

Question 10

What is the noble gas configuration of Zr+2?

Answer 10

[Kr]4d²

Question 11

What is the noble gas configuration of I-1?

Answer 11

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶

Question 12

Considered in succession, the elements in Period 2 show a ____ in atomic radius with increasing atomic number. This is best explained by _____.
a. decrease; nuclear charge increases
b. decrease; number of neutron decreases
c. increase; number of proton decreases
d. increase; number of principal energy level increases

Answer 12

a. decrease; nuclear charge increases

Question 13

For each successive electron removed from an atom, the ionization energy _________
a. decreases
b. increases
c. may increase or decrease
d. remains the same

Answer 13

b. increases

Question 14

Which ion is bigger in size: Fe+2 or Fe+3?

Answer 14

Fe+2

Question 15

The element with a relatively low 1st and 2nd ionization energy and a very high 3rd ionization energy is __.
a. Al
b. Na
c. Sr
d. Cl
e. Ar

Answer 15

c. Sr

Question 16

What is the shielding effect of O-2 in comparison to O?

Answer 16

equal

Question 17

What do electron domains refer to?

Answer 17

the general areas where electrons and electron bonds come from

Question 18

not a flashcard but REVIEW quarter 3 because u lowkey got COOKED

Question 19

What is the oxidation equation for a sodium and oxygen reaction?

Answer 19

4Na0–>4Na+1 +4e-

Question 20

What is the reduction equation for a sodium and oxygen reaction?

Answer 20

O2O+4e- –>2O+2

Question 21

Balance, complete, classify, and add phases to this reaction:
H2SO4+K2CO3—____

Answer 21

H2SO4(aq)+K2CO3(aq)+CO2(g)+H2O(l)