Correct any mistakes in the electron configurations below.

Chemistry

2 answers:

Ivan3 years ago

6 0

Answer:

See explanation.

Explanation:

D. 1s2, 2s2, 2p6, 3s2, 3p6, <u>4s2, 3d8;</u>

Explanation: before filling 3d orbitals, 4s needs to be filled. Since s holds 2 electrons, take two from the 3d10.

E. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2,<u> 3d10</u>, 4p3;

Explanation: after the 4s orbital, the 3d orbitals need to be filled. You do not fill the 4d orbitals until the 5s orbital is filled.

Here is a quick review of the order orbitals need to be filled in:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p;

s holds 2 electrons; p holds 6 electrons; d holds 10 electrons; f holds 14 electrons.

vodka [1.7K]3 years ago

5 0

Answer:

E.) 1s^22s^22p^23s^4p^4

Explanation:

You might be interested in

How many atoms are represented in the formula CaCO3

Dennis_Churaev [7]

Answer:100

Explanation:

CaCO3=40+12+3×16

=100

4 0

4 years ago

Read 2 more answers

A) How many moles of water will be formed if you start with 2.54 moles of

Tcecarenko [31]

Answer is 355 grams.
Explanation:
Given the molecular weights:
M
r
N
a
O
H
=
40
g
m
o
l

M
r
N
a
2
S
O
4
=
142
g
m
o
l
The analogy of the moles will be held constant:
n
N
a
O
H
n
N
a
2
S
O
4
=
2
1
n
N
a
O
H
n
N
a
2
S
O
4
=
2
For each one, substitute:
n
=
m
M
r
Therefore:
n
N
a
O
H
n
N
a
2
S
O
4
=
2
m
N
a
O
H
M
r
N
a
O
H
m
N
a
2
S
O
4
M
r
N
a
2
S
O
4
=
2
200
40
x
142
=
2
200
⋅
142
40
x
=
2
200
⋅
142
=
2
⋅
40
x
x
=
200
⋅
142
2
⋅
40
=
100
⋅
142
40
=
10
⋅
142
4
=
1420
4
=
=
710
2
=
355
g
r
a
m
s
(or just use a calculator)

7 0

3 years ago

Are iron filings a pure substance?

Elena L [17]

Yes they are a pure substance

8 0

3 years ago

Alkalis have a pH above 7.0 and turn litmus paper from red to blue. They feel slippery and soapy on the skin.

maria [59]

The answer is true due to the saponification of the fatty substances on the surface of the skin.

4 0

3 years ago