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
DIA [1.3K]
3 years ago
14

Write an electron configuration for an atom of aluminum-27 in an excited state

Chemistry
2 answers:
andrew11 [14]3 years ago
8 0
Ground state of Al  is 1s²2s²2p⁶3s²3p¹.
Exited state of Al is 1s²2s²2p⁶3s¹3p².
Alexus [3.1K]3 years ago
8 0

Answer: 1s^22s^22p^63s^13p^2.

Explanation:

Electronic configuration is defined as the distribution of electrons in the energy levels around an atomic nucleus.

Atomic number helps in determining the electronic distribution  of an atom. We write electronic configuration according to Aufbau's principle in which shells are arranged in increasing energy levels.

Aluminium (Al) is a p block element and its atomic number is 13.

Electronic configuration of aluminium is 1s^22s^22p^63s^23p^1.

Excite state is achieved when the electron moves to a higher energy level.The 3s electron moves to 3p orbital so that it can form three bonds.

Thus Electronic configuration of aluminium in an excited state is 1s^22s^22p^63s^13p^2.

You might be interested in
An alpha particle is equivalent to a _____ nucleus.
astra-53 [7]
Alpha particle is equivalent to B. Helium atom (2 protons, 2 neutrons) 
6 0
3 years ago
Read 2 more answers
Copper is an example of a(n)
expeople1 [14]

copper is not a stone, copper is not a consumption resource, and copper is not renewable, that means that :

d. nonrenewable resource

Explanation:

A nonrenewable source is a source of economic value that cannot be immediately displaced by natural means on a level equal to its destruction. Most fossil fuels, such as oil, natural gas, and coal are estimated nonrenewable resources in that their use is not sustainable because their production takes billions of years.

7 0
3 years ago
Read 2 more answers
Which is the next logical step in balancing the given equation? 3CO(g) + Fe2O3(s) Fe(s) + 3CO2(g)
Elena-2011 [213]

I believe that the answer is A.

5 0
3 years ago
Read 2 more answers
How many grams of sodium chloride are required to make a 1.0 L solution with a concentration of 3.5 M?
satela [25.4K]
3.5 M has 3.5 moles per litre
so we have one litre, so we need 3.5 moles
moles = mass/molarmass
3.5 * 23 = 80.5
5 0
3 years ago
Read 2 more answers
Changes in the environment that cause an organism to respond are called?
slega [8]

Answer:

Anything in the environment that causes a change is called a stimulus.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • In a first-order decomposition reaction, 50.0% of a compound decomposes in 10.5 min.
    8·1 answer
  • Classify correct or incorrect.
    14·2 answers
  • Substances change temperature at different rates because of their
    6·1 answer
  • Count the atoms in each formula from the reactions here:
    11·1 answer
  • The reduction of nitrogen monoxide is described by the following chemical equation: 2H2 (g) +2NO (g) 2H20 ()N2 (g Suppose a two-
    12·1 answer
  • How many fluoride ion (F-1) are needed to balance a lead (IV) ion (Pb+4)?
    11·2 answers
  • Which of the following is not a cause of water pollution?
    15·1 answer
  • How many joules of heat are required to raise the temperature of 174g of gold from 22°C to 85°C? The specific heat of gold is 0.
    11·1 answer
  • Science<br><br> 0.00098 I need that converted to the scientific notation I need help quick
    7·1 answer
  • Nitrate has the formula \textit {NO}_\textit3^-NO
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!