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
elena-s [515]
3 years ago
9

Mg-12 in Electron Configurations

Chemistry
1 answer:
sertanlavr [38]3 years ago
8 0

Explanation:

The electronic configuration of an atom can be represented by either sublevel notation or using shell notations.

 Sublevel notations shows the sequence of filling electrons into the orbitals of the sublevels.

 Shell notations are used to denote the electrons in all orbitals of each energy level.

Element    Number of electrons    Sub-level notation      shell notation

  Mg                      12                          1s² 2s² 2p⁶ 3s²               2  8  2

You might be interested in
When a piece of zinc metal is carefully placed in a beaker of strong acid, bubbles form on the surface of the metal and begin to
kati45 [8]

Answer:

A.  a new substance is being produced.

Explanation:

The bubbles most likely indicates that a new substance is being produced by this reaction. In essence, we describe this sort of change as chemical change.

In a chemical change, new substances are usually produced. They are accompanied by the evolution or absorption of energy.

The reaction of Zinc with a strong acid to produce bubbles on the surface of the metal indicates a chemical change and the formation of a new kind of substance.

Take for example, let zinc reacts with hydrocholoric acid, HCl;

   Zn         +      2HCl      →    ZnCl₂     +     H₂

Since Zn is higher than Hydrogen in the activity series, it will displace it from HCl and liberate hydrogen gas as a product. This will cause the bubbles observed in the reaction.

This is a chemical change and new products have been formed.

B and D are wrong because they are both physical changes.

C is wrong because no information about such is provided by the problem statement.

So, when a piece of zinc metal combines with a strong acid, a new kind of substance is produced.

8 0
3 years ago
Which compounds are bases in aqueous solution according to brønsted–lowry theory?.
Fittoniya [83]

Ammonia compounds are bases in aqueous solution according to brønsted–lowry theory.

<h3>What are bases?</h3>

A base is a substance that can neutralize the acid by reacting with hydrogen ions.

Ammonia compounds are based on an aqueous solution according to brønsted–lowry theory because the water molecule donates a hydrogen ion to the ammonia, it is the Brønsted-Lowry acid, while the ammonia molecule which accepts the hydrogen ion is the Brønsted-Lowry base. Thus, ammonia acts as a base in both the Arrhenius sense and the Brønsted-Lowry sense.

Hence, ammonia compounds are based on an aqueous solution according to brønsted–lowry theory.

Learn more about the  bases here:

brainly.com/question/16387395

#SPJ1

3 0
2 years ago
Answer my my science homework please
ludmilkaskok [199]
1. D

2. <span>83.5 million years ago - 66 million years ago

3. </span><span>It had armor and could rotate to keep its caudal bludgeon facing the enemy.

hope this helped :)
alisa202</span>
5 0
3 years ago
2.4 g of a solid is added to 91 g of water. What is the mass % concentration of the solution?
vladimir2022 [97]

Answer:

2.64%

Explanation:

mass percent = (grams of solute / grams of solution) x 100

mass percent = (2.4 / 91) × 100

mass percent = 2.64% to 3sf

8 0
1 year ago
Which of these is NOT a layer of the skin?
bagirrra123 [75]
I need the options to choose from
4 0
3 years ago
Read 2 more answers
Other questions:
  • How much solute (in mL) would you need to add to solvent in order to create 825 mL of a final solution that is 21% solute by vol
    7·1 answer
  • "find the heat absorbed by the gas during this process."
    15·1 answer
  • Based on the Lewis/electron dot representation
    6·1 answer
  • What do carbon, hydrogen, and oxygen atoms have in common?
    5·1 answer
  • What happens to the air temperature of a decending mass of air
    10·1 answer
  • What is an example of a compound science
    5·1 answer
  • the pressure of a has is 1.0 atm and it occupies a volume of 2.50 L. What will he the new volume of this has if the pressure is
    14·1 answer
  • Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Ca^2 , Al^3 ,I
    9·1 answer
  • Which is produced in a synthesis reaction?
    6·2 answers
  • The Density equation is:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!