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
iren [92.7K]
3 years ago
11

The electrons in an atom's outermost energy level are called: Electron dots. Quantum electrons. Valence electrons. Noble-gas ele

ctrons.​
Chemistry
1 answer:
Flauer [41]3 years ago
3 0

The valence electrons are located in an atom's outermost energy level

<h3>Further explanation  </h3>

In an atom, there are levels of energy in the shell and subshell  

This energy level is expressed in the form of electron configurations.  

Electrons fill the orbitals based on the Aufbau principle, namely the filling of electrons starts from the lowest energy level

  • Electron dots

Usually used in describing Lewis structures, placed around the element

  • Quantum electrons

Each orbital in an atom consists of 4 quantum numbers  : n, l, ml, ms

Each electron has a different quantum number and this conforms to Pauli's rule: no electrons have the same 4 quantum numbers

  • Valence electrons

Valence electrons are electrons used in a chemical bond , and  in an atom's outermost energy level

  • Noble-gas electrons

Noble gas has a stable electron configuration of 8 valence electrons which guides the formation of chemical bonds called the octet rule

You might be interested in
What are the empirical formula and empirical formula mass for C10H30O10?
AysviL [449]

Answer:

Empirical formula: CH₃O

Empirical formula mass = 31 g/mol

Explanation:

Data Given:

Molecular Formula = C₁₀H₃₀O₁₀

Empirical Formula = ?

Empirical Formula mass =

Solution

Empirical Formula:

Empirical formula is the simplest ration of atoms in the molecule but not all numbers of atoms in a compound.

So,

The ratio of the molecular formula should be divided by whole number to get the simplest ratio of molecule

As

C₁₀H₃₀O₁₀ Consist of  10 Carbon (C) atoms, 30 Hydrogen (H) atoms, and 10 Oxygen (O) atoms.

Now

Look at the ratio of these three atoms in the compound

                         C : H : O

                        10 : 30 : 10

Divide the ratio by two to get simplest ratio

                          C      :   H      :    O

                         10/10 : 30/10 : 10/10

                             1 : 3 : 1

So for the empirical formula the simplest ratio of carbon to hydrogen to oxygen is 1:3:1

So the empirical formula will be

                     Empirical formula of C₁₀H₃₀O₁₀ =  CH₃O

Now

To find the empirical formula mass in g/mol

Formula mass:

Formula mass is the total sum of the atomic masses of all the atoms present in a formula unit.

**Note:

if we represent the molar mass of the empirical formula for one mol in grams then it is written as g/mol

So,

As the empirical formula of C₁₀H₃₀O₁₀ is CH₃O

Then Its empirical formula mass will be

CH₃O

Atomic Mass of C = 12

Atomic Mass of H = 3

Atomic Mass of O = 16

Total Molar mass of CH₃O

CH₃O = 12 + 3(1) + 16

CH₃O = 12 + 3 + 16

CH₃O = 31 g/mol

4 0
3 years ago
In a DNA sample, 15% of the bases are thymine (T). What percentage of the bases in this sample are cytosine (C)?
allochka39001 [22]

Answer:

C) 35%

Explanation:

Thymine pairs with adenine. If thymine is 15% then so would adenine be 15%. That leaves the reaminder to be 70%. Cytosine pairs with guanine, thereby, they would each be 35%.

3 0
3 years ago
What does the second law of thermodynamics say about entropy
alukav5142 [94]

Answer:

The entropy and the systems surrounding it tend to increase.

5 0
3 years ago
Read 2 more answers
What is the volume of 0.1 mole of methane (CH4) ? (One mole of any gas occupies 22.4 L under certain conditions of temperature a
Veronika [31]

Answer:

Option A = 2.2 L

Explanation:

Given data:

volume of one mole of gas = 22.4 L

Volume of 0.1 mole of gas at same condition = ?

Solution:

It is known that one mole of gas at STP occupy 22.4 L volume. The standard temperature is 273.15 K and standard pressure is 1 atm.

For 0.1 mole of methane.

0.1/1 × 22.4 = 2.24 L

0.1 mole of methane occupy 2.24 L volume.

8 0
4 years ago
Read 2 more answers
Temperature and Thermal Er
gtnhenbr [62]

Explanation:

50 degrees fahrenheit =

10 degrees celsius

7 0
3 years ago
Read 2 more answers
Other questions:
  • A 30.0 mL sample of 2.3 M Cu(OH)2 sample was titrated to with 48.5 mL of HNO3 to find
    10·1 answer
  • Which picture shows the correct flow of electrical current
    8·2 answers
  • Each incomplete reaction is a neutralization reaction Match each equation with the salt formed,
    5·2 answers
  • Which of the following is the correct formula for nitrous acid? a) HNO b) HN2O c) N2O d) HNO2 e) HNO3
    9·1 answer
  • Compare and contrast the causes and effects of ocean-continent
    13·1 answer
  • Fireweed is often one of the first plants to grow after a forest fire or volcanic eruption. What adaptation might fireweed have?
    12·1 answer
  • What are two substances that are useful because of their viscosity? (Please describe why they are useful)
    15·1 answer
  • Properties of metals
    11·1 answer
  • When the head of a match burns, chemical reaction is taking place. But a certain amount of energy is required to get this reacti
    11·1 answer
  • Which statement is true about the following isotopes: Sulfur-34, Sulfur-33 and Sulfur-32? (Choose all that apply)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!