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
navik [9.2K]
3 years ago
6

How do you find the core electrons of the elements in the periodic table?

Chemistry
1 answer:
marysya [2.9K]3 years ago
3 0

Answer:

by determining or looking up the electron configurations of the main group elements.

Explanation:

The valence electrons participate in chemical reactions. ... You can also find the core and valence electrons by determining or looking up the electron configurations of the main group elements.

You might be interested in
A 1.0 M solution of a compound with 2 ionizable groups (pKa's = 6.2 and 9.5; 100 mL total) has a pH of 6.8. If a biochemist adds
juin [17]

Answer:

pH = 9,32

Explanation:

The compound with 2 ionizable groups has the following equilibriums:

H₂M ⇄ HM⁻ + H⁺ pka = 6,2

HM⁻ ⇄ M²⁻ + H⁺ pka = 9,5

The reaction of M²⁻ with HCl is:

M²⁻ + HCl → HM⁻ + Cl⁻

The moles of M²⁻ are:

0,100L×1,0M = 0,1moles

And moles of HCl are:

0,060L×1,0M = 0,06moles

That means that moles of M²⁻ will be 0,1-0,06 = 0,04mol and moles of HM⁻ will be the same than HCl, 0,06mol

Using Henderson-Hasselbalch formula:

pH = pka + log₁₀ [M²⁻] / [HM⁻]

Replacing:

pH = 9,5 + log₁₀ [0,04] / [0,06]

<em>pH = 9,32</em>

<em></em>

I hope it helps!

4 0
4 years ago
What isotope remains after the alpha decau of uranium-238?
lbvjy [14]
After alpha decay (234,90) remain from it
4 0
3 years ago
Consider the Lewis structure for glycine, the simplest amino acid: (a) What are the approximate bond angles about each of the tw
UkoKoshka [18]

Each carbon is tetrahedrally planar and has three sections, making all bond angles in (a) 120°.(b) hybridization with sp2.(c) If a double bond is present in the compounds, one of the bonds is a sigma connection and the other a pi bond.

<h3>What is an example of an amino acid?</h3>

A basic amino group (NH2), a carboxyl group group (COOH), and an organic Aromatic rings that really is specific to each amino acid make up an amino acid, an organic molecule.

<h3>Which five amino acids are there?</h3>

You must obtain the nine essential amino acids cytochrome c, isoleucine, hcl, lysine, methionine, phenylalanine, alanine, tryptophan, and valine through your food.They are essential for several bodily processes, such as protein biosynthesis, tissue regeneration, and nutrient uptake.

To know more about Lewis structure visit:

brainly.com/question/20300458

#SPJ4

6 0
1 year ago
Which parameter is measured directly in a coffee-cup calorimeter?
Softa [21]

Answer:

Pressure

Explanation:

5 0
3 years ago
Read 2 more answers
Which will NOT occur when a light tray ray interacts with a smooth pane of glass?
zhuklara [117]

Answer:

B) diffraction

Explanation:

A smooth pane of glass does not diffract light. A light passing through a smooth pane of glass may be absorbed, reflected or transmitted.

Diffraction only occurs with special types of glasses embedded with a diffraction grating and are called super prisms. Diffraction glasses use a a gradient lens which is able to  separate light into all the colors of the rainbow.

Recall that diffraction is the separation of white light into its component wavelengths.

5 0
3 years ago
Other questions:
  • 5. A hollow glass sphere has a volume of 350 mL and
    9·1 answer
  • What happens to an electron during an electron transition?
    14·1 answer
  • Given the net ion equationBa2+ + SO2−&gt; BaSO4 ,how many grams of barium chloride must be present to react with 200grams of iro
    12·1 answer
  • What happens during meiosis that does NOT happen during mitosis?
    15·2 answers
  • how do computers use input and output to get and give the imformation that tney need to solve problem
    10·1 answer
  • Question 2
    6·1 answer
  • True or false?
    15·2 answers
  • Why is blood is sometimes called "the river of life"?
    15·2 answers
  • What is the temperature, in Kelvin, of a 213.3 L cylinder at 855 mm Hg that contains 6.3 moles of neon, Ne, gas?
    9·1 answer
  • 3. Carbon -14 underwent radioactive decay and emitted beta particles.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!