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blsea [12.9K]
3 years ago
14

What is the electron configuration of a chlorine ion in a compound of BeCl2?

Chemistry
2 answers:
mestny [16]3 years ago
8 0
The  electronic  configuration  of  a   chlorine ion  in BeCl2  compound is

[2.8.8]^-  (answer  B)

chlorine  atom  gain  on electron form Be to  form  chloride ions
chlorine  atom  has  a  electronic   configuration of  2.8.7   and  it  gains one  electron  to  form  chloride ion  with  2.8.8  electronic  configuration
Brrunno [24]3 years ago
5 0
Chlorine has 7 valence electrons in the outermost shell. when it forms an ionic bond with Be, it takes in 1 electron and achieves the noble gas configuration
since it has one more electron it gains a negative charge of -1.
anion is then - Cl⁻
electronic configuration of Cl atom is - [2,8,7]
after taking in the electron Cl⁻ - [2,8.8]⁻
answer is 
<span>B. [2.8.8]</span>⁻
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2.) At what temperature in Celsius will a 1.0g sample of neon gas exert a pressure of 500 torr in a 5.01 L container. (Hint: use
Studentka2010 [4]

The required temperature of the sample of gas is 823K.

<h3>What is ideal gas equation?</h3>

Ideal gas equation gives idea about the behavior of gas at different condition & represented as:

PV = nRT, where

  • P = pressure = 500 torr = 0.657 atm
  • V = volume = 5.01 L
  • R = universal gas constant = 0.082 L.atm / K.mol
  • T = temperature = ?
  • n = moles

Moles will be calculated as:
n = W/M, where

  • W = given mass
  • M = molar mass

Moles of Neon gas = 1g / 20.1g/mol = 0.049 mole

On putting all these values in the above equation, we get

T = (0.657)(5.01) / (0.049)(0.082) = 822.8 = 823 K

Hence required temperature of the sample is 823 K.

To know more about ideal gas equation, visit the below link:
brainly.com/question/21912477

#SPJ1

4 0
3 years ago
Sort these six events from the earliest to the most recent. Democritus proposes the existence of atoms- Dalton's atomic theory-
Igoryamba
These events are actually sorted right, according to the time they occurred.
1. Democritus proposes the existence of atoms - this happened in the 5th century BC
2. Dalton's atomic theory - it was first presented in 1803
3. J.J. Thomson discovers the electron - happened in 1897
4. Rutherford's gold foil experiment - somewhere between 1908 and 1913
5. Bohr model - it was introduced in 1913
6. Schrodinger's wave - the equation was published in 1925
4 0
3 years ago
A sample of neon occupies a volume of 461 mL at 1 atm and 273 K. What will be the volume of the neon when the pressure is reduce
Softa [21]

Answer:

0.501 L

Explanation:

To solve this problem we will use Boyle,s Law. According to this law "The volume of given amount of gas is inversely proportional to applied pressure at constant temperature".

                           V∝ 1/P

                           V= K/P

                            VP=K

Here the K is proportionality constant.

so,

             P1V1 = P2V2

P= pressure

V= volume

Given data:

P1= 1 atm

V1= 461 mL

P2= 0.92 atm

V2= ? (L)

To solve this problem we have to convert the mL into L first.

1 L = 1000 mL

461/1000= 0.461 L

Now we will put the values in the equation,

P1V1 = P2V2

V2= P1V1/ P2

V2= 1 atm × 0.461 L / 0.92 atm

V2= 0.501 L

4 0
4 years ago
What is the best description of weathering
aleksley [76]

Answer:The best answer is D. breakdown of rock through mechanical or chemical processes

Explanation:

3 0
3 years ago
Read 2 more answers
Suppose 35 mg of benzoic acid is dissolved in 7 mL of dichloromethane. The resulting organic solution is then extracted with
olga nikolaevna [1]

Answer:

Kp = 13.3

Explanation:

Partition coefficient is used to extract or purify a solute from a solvent selectively to avoid interference from other substances. The formula is:

Kp = Concentration of solute in organic solvent / Concentration of solute in H₂O

As the CH₂Cl₂ is containing 31mg, water is containing 4mg. Replacing in the formula:

Kp = (31mg/7mL) / (4mg/12mL)

<h3>Kp = 13.3</h3>
7 0
4 years ago
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