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
borishaifa [10]
3 years ago
14

According to the aufbau principle,_____.

Chemistry
2 answers:
Softa [21]3 years ago
5 0

Answer:

Hi there!

The correct answer to this question is: electrons enter orbitals of lowest energy first.

natulia [17]3 years ago
3 0

Answer:

C

Explanation:

Aufbau principle states that the electrons which are present in ground state of fill the atomic orbitals in such a way that the lowest energy levels which are available are filled first before electrons occupying the higher levels.

<u>Hence, From the given options, C is correct which is electron enter orbitals of lower energy first.</u>

You might be interested in
CLIC 3. The blank is the central part of an atom.​
lorasvet [3.4K]

Answer:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

6 0
3 years ago
1.24 moles of magnesium arsenate are dissolved in 1.74 kg of solution. Calculate the molality of the solution.
aleksklad [387]

Answer:

Molality of the solution = 0.7294 M

Explanation:

Given:

Number of magnesium arsenate = 1.24 moles

Mass of solution = 1.74 kg

Find:

Molality of the solution

Computation:

Molality of the solution = Mole of solute / Mass of solution = 1.74 kg

Molality of the solution = 1.24 / 1.7

Molality of the solution = 0.7294 M

6 0
3 years ago
How many moles of HNO3 are present if 4.90×10−2 mol of Ba(OH)2 was needed to neutralize the acid solution?
Amiraneli [1.4K]

Answer:

0.098 moles

Explanation:

Let y represent the number of moles present

1 mole of Ba(OH)₂ contains 2 moles of OH- ions.

Hence, 0.049 moles of Ba(OH)2 contains y moles of OH- ions.

To get the y moles, we then do cross multiplication

1 mole *  y mole = 2 moles * 0.049 mole

y mole = 2 * 0.049 / 1

y mole =  0.098 moles of OH- ions.

1 mole of OH- can neutralize 1 mole of H+

Therefore, 0.098 moles of HNO₃ are present.

3 0
3 years ago
Why is it important for a measurement system to have an international standard ?
Ray Of Light [21]

Answer:

Mark me brainliest

Explanation:

Standards help avoid confusion and ambiguity when taking measurements. For example, a meter will always be the same length, no matter who is taking the measurement or where it is being taken.

4 0
3 years ago
What is the formula for solid sodium metal reacts with solid iron (lll) chloride. Solid iron metal and solid sodium chloride are
sineoko [7]

Answer:

Explanation:When sodium metals reacts with iron (ll) chloride,iron metal and sodium chloride are formed. -2 Na(s)+fella(s) fev(s)+2Naci.

3 0
2 years ago
Other questions:
  • Will give brainliest .Antarctica is believed to have always been positioned at it's current spot on the Earth.
    9·1 answer
  • What was the name of the disease that killed nearly half the people of Europe?
    12·2 answers
  • How much of a 1.0 g polonium-214 sample remains after 818 microseconds? The half life of polonium-214 is 163.7 microseconds.​
    10·1 answer
  • Consider the chemical equations shown here.
    8·1 answer
  • How many<br> How long does it take to go<br> from a new moon to a third<br> quarter?
    11·1 answer
  • Can you guys help please
    13·1 answer
  • Balance the following equation by providing the correct coefficients C2H6 + O2 -&gt; CO2 + H2O
    14·1 answer
  • Why is Newton's first law of motion is sometimes called the law of inertia
    5·1 answer
  • Mars is known as the red planet, and Neptune is known as the icy blue planet. What is a common characteristic between Mars and N
    10·1 answer
  • What is carbon sink and how it effects our environment?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!