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3 years ago

An ion of sulfur has a smaller atomic radius than a neutral atom of sulfur because it loses an electron when becoming an ion.

1 answer:

4 0

Answer is FALSE. Because sulfur has no tendency to loss an electron, since its electronic configuration is 16, it always want to gain 2 electron to form S^2-, following octet rule.

The answer would be yes if it can lose an electron(because when an atom loses an electron it form cation whose nuclear charge remain as same as neutral atom but number of electron decreases. As a result the nuclear charge has to act on a fewer number of electron and hence there will be more attraction between the nuclear charge and outermost electrons resulting in decrease in size) but it is not possible in case of sulfur.

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The molecular formula for caffeine is C8H10N4O2. Which of the following elements is not found in caffeine? carbon helium nitroge

madreJ [45]

Helium is not found. That is 8 molecules of carbon, 10 Hydrogen, 4 nitrogen, and 2 Oxygen. I think...Hope this helps.

8 0

3 years ago

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Guys, how do i know whether the forces of attraction is strong or weak?

Savatey [412]

Answer:

Whether the forces of attraction is strong or weak is explained below in details.

Explanation:

There are three distinct kinds of intermolecular forces in expressions of energy. They are (strongest to weakest) dipole-dipole, hydrogen bonding, and Van der Waals' strengths. Intermolecular forces are weak related to intramolecular forces – the energies which endure a molecule collectively. For instance, the covalent bond, including distributing electron sets among atoms, is much more powerful than the forces impersonate among neighboring molecules.

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3 years ago

Which of the following statements is FALSE?A) Anions are usually larger than their corresponding atom.B) Metals tend to form cat

jonny [76]

Answer:

D) The halogens tend to form 1+ ions.

Explanation:

A) Is correct because the atom gains an electron

B) Is correct because metals tends to lose electrons

C) Is correct because the atom loses an electron

D) Is incorrect because the halogens tends to gain electrones (1-)

E) Is correct because Nonmetals tend to form anions

4 0

3 years ago

Read 2 more answers

When of glycine are dissolved in of a certain mystery liquid , the freezing point of the solution is lower than the freezing poi

Nesterboy [21]

The given question is incomplete. The complete question is:

When 282. g of glycine (C2H5NO2) are dissolved in 950. g of a certain mystery liquid X, the freezing point of the solution is 8.2C lower than the freezing point of pure X. On the other hand, when 282. g of ammonium chloride are dissolved in the same mass of X, the freezing point of the solution is 20.0C lower than the freezing point of pure X. Calculate the van't Hoff factor for ammonium chloride in X.

Answer: the van't Hoff factor for ammonium chloride is 1.74

Explanation:

Depression in freezing point is given by:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f=T_f^0-T_f=8.2^0C$ = Depression in freezing point

$K_f$ = freezing point constant = ?

i = 1 ( for non electrolyte)

m= molality

$8.2^0C=1\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}\times \text{weight of solvent in kg}}$

Weight of solvent (X)= 950 g = 0.95 kg

Molar mass of solute (glycine) = 75.07 g/mol

Mass of solute (glycine) = 282 g

$8.2^0C=1\times K_f\times \frac{282g}{75.07g/mol\times 0.95kg}$

$K_f=2.07$

ii) $20.0^0C=i\times \times \frac{\text{mass of solute}}{\text{molar mass of solute}\times \text{weight of solvent in kg}}$

Weight of solvent (X)= 950 g = 0.95 kg

Molar mass of solute (ammonium chloride) = 53.49 g/mol

Mass of solute (ammonium chloride) = 282 g

$20.0^0C=i\times 2.07\times \frac{282g}{53.49g/mol\times 0.95kg}$

$i=1.74$

Thus the van't Hoff factor for ammonium chloride is 1.74

4 0

3 years ago

a galvanic cell zn | zn²⁺ || ni²⁺ | ni runs spontaneously. if a current is imposed to turn this into an electrolytic cell, which

hodyreva [135]

Answer:

Zn²⁺ gets reduced

Explanation:

An electrolytic cell runs in the opposite direction of a galvanic cell. Applying a current to the galvanic cell Zn | Zn²⁺ || Ni²⁺ | Ni would convert the Zn anode to a cathode and cause Zn²⁺ to be reduced.

8 0

3 years ago