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4 years ago

What is the ground-state electron configuration of the oxide ion o2−?

Chemistry

1 answer:

bogdanovich [222]4 years ago

3 0

Answer : The ground-state electronic configuration of oxide ion is,

$1s^22s^22p^6$

Explanation :

Electronic configuration : It is defined as the distribution of electrons of atom in an atomic orbital.

<u>Oxygen</u>

The total number electrons in oxygen = 6

The electronic configuration of oxygen is,

$1s^22s^22p^4$

<u>Oxide ion</u>

The total number electrons in oxide ion, $O^{2-}$ = 6 + 2 = 8

The charge on O is (-2). So, we are adding 2 electrons.

The electronic configuration of oxide ion is,

$1s^22s^22p^6$

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Answer:

Yes.

Explanation:

Because distillation separates substances based on their different boiling points.

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3 years ago

Which of the following is a half-reaction? A. Zn+CuSO4−> B. 2Cl−−>Cl2+2e− C. H2+1/2O2−>H2O D. −>Cu+ZnSO4

malfutka [58]

Answer:

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Explanation:

It shows an electron loss or gain

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3 years ago

What is Br mass number?

Fofino [41]

Name Bromine

Symbol Br

Atomic Number 35

Atomic Mass 79.904 atomic mass units

Number of Protons 35

Number of Neutrons 45

Number of Electrons 35

Melting Point -7.2° C

Boiling Point 58.78° C

Density 3.119 grams per cubic centimeter

Normal Phase Gas

Family Halogens

Period 4

Cost $4.90 per 100 grams

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4 years ago

Calculating molarity using solute moles A chemist prepares a solution of sodium chloride (NaCl) by measuring out 6.89 mol of sod

hram777 [196]

Answer: Concentration of the chemist's sodium chloride solution is 34.4 mol/L.

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

where,

n= moles of solute

$V_s$ = volume of solution in ml

Given : moles of $NaCl$ = 6.89

volume of solution = 200 ml

Putting in the values we get:

$Molarity=\frac{6.89\times 1000}{200}=34.4mol/L$

Thus the concentration of the chemist's sodium chloride solution is 34.4 mol/L.

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3 years ago