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3 years ago

To achieve an octet, the oxygen atom forms an ion. The name of this ion is ________.

Chemistry

2 answers:

Julli [10]3 years ago

7 0

Answer:

The correct option is oxide ion

Explanation:

In the periodic table, elements (other than noble gases) tend to achieve there duplet/octet electron configuration (having a completely filled outermost shell) by either donating or accepting electrons. Generally, metals donate electrons to become positively charged cations while non-metals accept electrons to become negatively charged anions.

Oxygen accepts two electrons in order to have a fully filled outermost shell and become O²⁻ or oxide ion. Oxygen itself is an element and it's ion is called oxide ion

Semenov [28]3 years ago

5 0

Oxide ion. because oxsgen has 6 electrons in its orbit or subshell, so it needs only two to achieve the octet rule by gaining 2 electrons. Gaining electrons means that the element become an anion ion

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An ethylene glycol solution contains 21.4 g of ethylene glycol (C2H6O2) in 97.6 mL of water. (Assume a density of 1.00 g/mL for

8090 [49]

Answer: The freezing point and boiling point of the solution are $-6.6^0C$ and $101.8^0C$ respectively.

Explanation:

Depression in freezing point:

$T_f^0-T^f=i\times k_f\times \frac{w_2\times 1000}{M_2\times w_1}$

where,

$T_f$ = freezing point of solution = ?

$T^o_f$ = freezing point of water = $0^0C$

$k_f$ = freezing point constant of water = $1.86^0C/m$

i = vant hoff factor = 1 ( for non electrolytes)

m = molality

$w_2$ = mass of solute (ethylene glycol) = 21.4 g

$w_1$ = mass of solvent (water) = $density\times volume=1.00g/ml\times 97.6ml=97.6g$

$M_2$ = molar mass of solute (ethylene glycol) = 62g/mol

Now put all the given values in the above formula, we get:

$(0-T_f)^0C=1\times (1.86^0C/m)\times \frac{(21.4g)\times 1000}{97.6g\times (62g/mol)}$

$T_f=-6.6^0C$

Therefore,the freezing point of the solution is $-6.6^0C$

Elevation in boiling point :

$T_b-T^b^0=i\times k_b\times \frac{w_2\times 1000}{M_2\times w_1}$

where,

$T_b$ = boiling point of solution = ?

$T^o_b$ = boiling point of water = $100^0C$

$k_b$ = boiling point constant of water = $0.52^0C/m$

i = vant hoff factor = 1 ( for non electrolytes)

m = molality

$w_2$ = mass of solute (ethylene glycol) = 21.4 g

$w_1$ = mass of solvent (water) = $density\times volume=1.00g/ml\times 97.6ml=97.6g$

$M_2$ = molar mass of solute (ethylene glycol) = 62g/mol

Now put all the given values in the above formula, we get:

$(T_b-100)^0C=1\times (0.52^0C/m)\times \frac{(21.4g)\times 1000}{97.6g\times (62g/mol)}$

$T_b=101.8^0C$

Thus the boiling point of the solution is $101.8^0C$

4 0

3 years ago

Near the ceiling of a room air is warmer. The warm air rises because of

Amiraneli [1.4K]

Answer:

convection

Explanation:

heat will always rise

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3 years ago

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Food contains chemical potential energy that the body uses. How do you think that the body gains this energy

defon

By digesting the food

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3 years ago

How is the AHfusion used to calculate volume of liquid frozen that produces 1

yulyashka [42]

Answer:

option B

Explanation:

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2 years ago

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Which term refers to a small group of atoms that are attached to larger molecules, providing them with specific chemical propert

stepan [7]

Answer: Small groups of atoms that are attached to larger molecules, giving the specific chemical properties, are called functional groups.

explanation: Functional groups are groups of atoms in a molecule that possess the same chemical feature every time it appears in several compounds. There are various types of functional groups and they have the tendency to react in definite ways. Examples include; the ether functional group (consists of an oxygen atom that forms single bonds with two carbon atoms),the alcohol functional group (consists of an oxygen atom that is bonded to one hydrogen atom and one carbon atom), and the amine functional group (consists of a nitrogen atom bonded to some combination of carbons and hydrogens).

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1 year ago