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3 years ago

A. What is an atom's electron configuration?

Chemistry

2 answers:

Tju [1.3M]3 years ago

5 0

Answer:

It is the distributions of electron on the three levels

Explanation:

The three levels are : K . L . M . N

yaroslaw [1]3 years ago

5 0

Electron configuration is the amount of electrons in each shell and how many shells so say like if the atomic number was 15 the max in first shell is 2 then 2nd is 8 and there is 5 left. So it would e 2,8,5

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For each molecule, specify the polarity of the bonds and the overall polarity of the molecule.

olasank [31]

Each Be–Cl bond is polar because the two atoms have different electronegativities. The number of outer atoms (2) and lone pairs on the central atom (0) indicate that this molecule has a linear geometry. The bonds in a linear molecule are symmetric, and so their dipoles cancel out.

Each O–H bond is polar because the two atoms have different electronegativities. The number of outer atoms (2) and lone pairs on the central atom (2) indicate that this molecule has a bent geometry. The bonds in a bent molecule are asymmetric, and so their dipoles do not cancel out. In addition, the asymmetric arrangement of the lone pairs on O further contribute to the dipole of this molecule.

An O–O or O=O bond is nonpolar because the two atoms have the same electronegativity. Because there is no overall polarity in O2, the molecule is nonpolar.

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3 years ago

Which color of visible light has the highest energy?

DanielleElmas [232]

Answer:

Blue: Because violet really has the most and blue is based on violet!

Explanation:

Hope this helps! Plz mark as brainliest!

4 0

3 years ago

What is the number of moles in 15.0 g AsH3?

pentagon [3]

We are given with the mass of Arsine ( $AsH_{3}$

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

$moles=\frac{mass}{molarmass}$

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

$moles=\frac{15}{77.92}=0.192mol$

7 0

3 years ago

Óxido cuprico+amoniaco-------Nitrógeno +cobre +agua(redox)

tigry1 [53]

Answer:

?? no entiendo la pregunta?...pero gracias por los puntos free UvU

Explanation:

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3 years ago

What is the endpoint of a titration?Select one:When there is no acid and all base.When the amount of acid and base are equal.Whe

user100 [1]

Answer:

The correct option is: When the amount of acid and base are equal

Explanation:

Titration is an analytic method that is used to determine the concentration of an unknown solution, called titrand.

In this method, standard solution of known concentration, called titrant, is taken in the burette and added drop-wise to the titrand solution in the flask, until the endpoint is reached.

In case of an acid-base titration, a pH indicator is used, which changes the color of the solution when the endpoint is reached.

The endpoint indicates the equivalence point of an acid-base titration, where the concentration of the acid and base is equal.

Therefore, the correct option is: When the amount of acid and base are equal

3 0

3 years ago