1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
loris [4]
3 years ago
8

1

Chemistry
1 answer:
Step2247 [10]3 years ago
4 0

Answer:

1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6} (alternatively 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6)

Explanation:

The correct configuration for bromide (Br^{-}) is:

1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6} (it has one more electron in 4p orbital than bromine)

You can also write it as [Ar] 4s^{2} 3d^{10} 4p^{6}, since noble gases are very stable

First can't be correct because there is nothing in 3p orbital and 4p has only 5 electrons here

1s² 2s2 2p6 3s2 3<u>p 4</u>s2 3d10 4<u>p5</u>

Second can't be correct because there is nothing in 2p and 4p orbitales 1s2 2s² 2<u>p 3</u>s2 3p6 4s2 3d10 4<u>p</u>

Third can't be correct because there is nothing in 3p orbital and 4p has only 5 electrons here

1s 2s2 2p6 3s2 3p<u>'</u> 4s2 3d10 4<u>p5</u>

Fourth can't be correct because there is nothing in 2p and 3d orbitales, and 4p has only 5 electrons here

1s2 2s2 2<u>p 3</u>s2 3p6 4s2 3<u>dº </u>4<u>p5</u>

You might be interested in
Where would you expect snow or rain to fall on a mountain
patriot [66]
You would expect snow to fail at the peak or the top because the weather is coldest there.
7 0
4 years ago
When 3.0 kg of water is warmed from 10 °C to 80 °C, how much heat energy is needed?
Naddik [55]

Answer:

THE HEAT NEEDED TO CHANGE 3KG OF WATER FROM 10 C TO 80 C IS 877.8kJ OR 877,800 J.

Explanation:

Mass = 3.0 kg = 3 * 1000 = 3000 g

Initial temperature = 10 C

Final temperature = 80 C

Change in temperature = 80 - 10 = 70 C

Specific heat of water = 4.18 J/g C

Heat needed = unknown

Heat is the amount of energy in joules needed to change a gram of water by 1 C.

Heat = mass * specific heat * change in temperature

Heat = 3000 g * 4.18 J/g C * 70 C

Heat = 877 800 Joules

Heat = 877.8 kJ.

The heat needed to change 3 kg mass of water from 10 C to 80 C is 877,800 J or 877.8 kJ.

6 0
3 years ago
What atomic number 15 protons and 10 neutrons and 13 electrons
pochemuha

Answer:

i think its 15

Explanation:

6 0
3 years ago
Read 2 more answers
Express your answer using two significant figures. 1.7 km^2
Fynjy0 [20]
1.7 km^2 already has two significant figures.
4 0
4 years ago
PLEASE HELP!!!
JulijaS [17]
Magnesium-26
[Ne] 3s2
5 0
3 years ago
Other questions:
  • How many moles of oxygen gas are needed to react completely with 17.9 mL Mg, with a density of 1.74 g/mL?
    7·2 answers
  • What is electrolysis
    13·1 answer
  • Write an equation that represents the action in water of nitrous acid as an arrhenius acid.
    13·1 answer
  • Jamal draws the circuit diagram shown. A rectangular box of lines with the long horizontal side and an extra vertical line at th
    13·2 answers
  • Why do solids react faster in powder form than in lump form
    7·1 answer
  • Ammonia is the most common and well-known weak base. A sample of household ammonia has a pH of 11.8. Determine its concentration
    12·2 answers
  • Which statement explains why water is classified
    10·2 answers
  • What type of rock is limestone? Describe how a limestone rock is likely to change over a long period of time. Pls answer I will
    14·2 answers
  • Lithium Nitride is a ionic bonded compound because?
    12·1 answer
  • What does X represent in the following reaction?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!