All categories

3 years ago

Which of the following diagrams is the correct electron dot diagram for Ne?

Chemistry

1 answer:

inna [77]3 years ago

3 0

Answer:

Explanation:

The electron dot diagram which is also known as the Lewis electron dot diagram is a diagram that shows an atom's valence electrons by placing dots, which represent the valence electrons of the element, around the elements symbol

The element for which the electron dot diagram is found = Neon, Ne

The atomic number of neon, Ne = 10

The electronic configuration of neon = 1s²2s²2p⁶

The valence shell is the outermost shell having the highest value of the coefficient of the orbitals, n = 2s²2p⁶

The number valence electrons in neon = The number of electrons in the valency shell = 2 electrons + 6 electrons = 8 electrons

The number of valence electrons in neon = 8

Therefore, the electron dot diagram for neon will have 8 dots located around the Ne symbol, which gives option B

You might be interested in

A concentration cell is constructed using two Ni electrodes with Ni2+ concentrations of 1.0 M and 1.00 � 10�4 M in the two half-

Komok [63]

Answer: The cell potential of the cell is +0.118 V

Explanation:

The half reactions for the cell is:

Oxidation half reaction (anode): $Ni(s)\rightarrow Ni^{2+}+2e^-$

Reduction half reaction (cathode): $Ni^{2+}+2e^-\rightarrow Ni(s)$

In this case, the cathode and anode both are same. So, $E^o_{cell}$ will be equal to zero.

To calculate cell potential of the cell, we use the equation given by Nernst, which is:

$E_{cell}=E^o_{cell}-\frac{0.0592}{n}\log \frac{[Ni^{2+}_{diluted}]}{[Ni^{2+}_{concentrated}]}$

where,

n = number of electrons in oxidation-reduction reaction = 2

$E_{cell}$ = ?

$[Ni^{2+}_{diluted}]$ = $1.00\times 10^{-4}M$

$[Ni^{2+}_{concentrated}]$ = 1.0 M

Putting values in above equation, we get:

$E_{cell}=0-\frac{0.0592}{2}\log \frac{1.00\times 10^{-4}M}{1.0M}$

$E_{cell}=0.118V$

Hence, the cell potential of the cell is +0.118 V

5 0

3 years ago

The magnetic field makes life possible by protecting us from ___________. A) aliens B) sunlight C) the moon D) deadly ratio acti

dimaraw [331]

Answer:

the answer is B) sunlight

6 0

3 years ago

Read 2 more answers

What three quantities/variables are needed in order to calculate the amount of heat (q) given off or absorbed during a chemical

balandron [24]

Three quantities/variables are needed in order to calculate the amount of heat given off or absorbed during a chemical reaction are the substance, the process and the amount of substance.

When a substance in the same state absorbs heat, its temperature increases.

The amount of heat absorbed is proportional to the amount of the substance and the increase in temperature.

The amount of heat needed to raise the temperature of one gram of substance by 1°C is called the specific heat of that substance.

The specific heat of water is 4.18 J/g°C.

The amount of heat, q, absorbed by a given mass (m) of substance with specific heat, s, when its temperature increases by ΔT is given by the following formula: q = m × s × ΔT.

More about amount of heat: brainly.com/question/25603269

#SPJ4

7 0

1 year ago

(2)Answer asappppp pls I neee help

pav-90 [236]

Answer:

It’s correct

Explanation:

4 0

3 years ago

Why is it dangerous to wear contact lenses in the lab

Illusion [34]

Answer:

It is strongly recommended that students do NOT wear contacts lenses in the laboratory. Chemical vapors may penetrate the contact lens material and cause the lens to adhere to one's eye, which could be detrimental to the eye. Goggles are not vapor tight and do not completely eliminate this absorption.

7 0

2 years ago