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
lesya [120]
3 years ago
13

What is the noble gas electron configuration of aluminum (Al)? A. [Ne] 3s2 3p1 B. [Ne] 2s2 2p1 C. [Ar] 3s2 3p1 D. [Ar] 1s2 2s2 2

p6 3s2 3p1
Chemistry
2 answers:
Gekata [30.6K]3 years ago
6 0

[Ne] 3s2 3p1  So its A

erica [24]3 years ago
6 0

the atomic number of Al is 13. Atomic number of an element is the number of protons, atomic number is characteristic to the element. the element in its neutral form has an equal number of protons and electrons, hence its neutral

therefore number of electrons in Al is 13

electronic configuration is the order in which electrons are arranged in the respective energy shells and subshells

electronic configuration of Al is 1s² 2s² 2p⁶ 3s² 3p¹

noble gas electron configuration is where you find the noble gas just before Al in order of atomic numberand the noble gas just before Al is Ne with an atomic number of 10.

So replace 1s² 2s² 2p⁶ with [Ne]

then the noble gas electron configuration of Al is [Ne] 3s² 3p¹

You might be interested in
Which phrase is the best definition of matter?
Verdich [7]

The amount of physical material in an object

4 0
3 years ago
Read 2 more answers
In reversible reaction when do forward reactions take place
kari74 [83]

Answer:

that is true. because reversible react is take place in forward and backward reaction

7 0
3 years ago
Aluminum chloride can be formed from its elements:
saul85 [17]

<u>Answer:</u> The \Deltas H^o_{formation} for the reaction is -1406.8 kJ.

<u>Explanation:</u>

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.

The chemical reaction for the formation reaction of AlCl_3 is:

2Al(s)+3Cl_2(g)\rightarrow 2AlCl_3 (s)    \Delta H^o_{formation}=?

The intermediate balanced chemical reaction are:

(1) HCl(g)\rightarrow HCl(aq.)    \Delta H_1=-74.8kJ    ( ×  6)

(2) H_2(g)+Cl_2(g)\rightarrow 2HCl(g)    \Delta H_2=-185kJ     ( ×  3)

(3) AlCl_3(aq.)\rightarrow AlCl_3(s)    \Delta H_3=+323kJ     ( ×  2)

(4) 2Al(s)+6HCl(aq.)\rightarrow 2AlCl_3(aq.)+3H_2(g)    \Delta H_4=-1049kJ

The expression for enthalpy of formation of AlCl_3 is,

\Delta H^o_{formation}=[6\times \Delta H_1]+[3\times \Delta H_2]+[2\times \Delta H_3]+[1\times \Delta H_4]

Putting values in above equation, we get:

\Delta H^o_{formation}=[(-74.8\times 6)+(-185\times 3)+(323\times 2)+(-1049\times 1)]=-1406.8kJ

Hence, the \Deltas H^o_{formation} for the reaction is -1406.8 kJ.

6 0
3 years ago
Which is a resource that the National Park Service manages?
pantera1 [17]

Answer:

to preserve the integrity of the wildlife refuge, ecosystems and the endangered species.

Explanation:

A national park service manages

4 0
2 years ago
Noble gas notation write the electron configuration for the manganese atom
8_murik_8 [283]
<span> the electron configuration for the manganese atom [Ne]3s</span>²
6 0
3 years ago
Other questions:
  • The energy required to remove an electron from an atom is known as
    12·1 answer
  • Two chemical reactions are shown:
    13·1 answer
  • The water in a carbonated drink is the <br> A solute <br> B soultion <br> C solvent <br> D mixture
    11·1 answer
  • Calculate the molecular weights for NH3 and SF6.
    8·1 answer
  • What are all of stephanie louise kwolek inventions
    5·1 answer
  • Based on your observations in the lab, what do you think happens to the majority of water (not, ice) at the poles? at the equato
    7·1 answer
  • Name the piece of equipment shown above:
    11·2 answers
  • What do scientist do to easily share measurement data they can understand
    8·1 answer
  • BRAINLIEST!!! PLZ HELP
    9·1 answer
  • Context givin in picture
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!