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3 years ago

48. Explain how atoms (ions) are held together in an ionic bond. Give an example of an ionic

Chemistry

2 answers:

zalisa [80]3 years ago

3 0

Answer:

By transfer of electron from electropositive to electronegative elements

Explanation:

Examples are NaCl, MgO, Al2O3

ICE Princess25 [194]3 years ago

3 0

Answer: Atoms (ions) are held together in an ionic bond through Electrostatic attraction

Explanation: Ions are atoms that lose or gain one or more electrons to become either positively or negatively charged, which are called anions and cations respectively. The cations are usually metals while anions are usually non-metals.

The bond (ionic bond) is formed when there is a transfer of valence electron(s) between the anion and the cation in order to obtain a full valence shell for both atoms.

Example of an ionic compound is NaCl.

Where: Na is the cation that looses a valence electron to become stable to Chlorine which is the anion that gained an electron to become stable.

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How many moles of mercury are equivalent to 3.46 x 1023 atoms?

olga55 [171]

Answer:

3.02 X1023 atoms Ag limol. - - 0.50 1 moles. 6.02241023 atoms.

4 0

2 years ago

Water readily sticks to many other substances, a property called ______. Water readily sticks to many other substances, a proper

Ahat [919]

Answer:

Option (2)

Explanation:

Cohesion is usually defined as the contrasting property by which the water molecules are attached to one another, and adhesion is the property by which the molecular substances are linked to the molecules of other substances.

Since, the water molecules are able to form inter-molecular hydrogen bonding, so they are comprised of strong cohesive force.

And, as the water molecules are able to stick to the walls of the container, so they tend to show more of the properties for adhesion.

Thus, according to the given condition, water molecules are sticking to other substances and this is the property of adhesion.

Hence, the correct answer is option (2).

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2 years ago

Select the correct value for the indicated bond angle in each of the following compounds: O-S-O angle of SO2 F-B-F angle of BF3

Stels [109]

Answer:

(A) O-S-O bond angle of SO₂ molecule = 119°

(B) F-B-F bond angle of BF₃ molecule = 120°

(D) O-C-O bond angle of CO₂ molecule = 180°

(E) F-P-F bond angle of PF₃ molecule = 96.3°

(F) H-C-H bond angle of CH₄ molecule = 109.5°

Explanation:

Bond angle refers to the angle between two adjacent chemical bonds in a molecule. The bond angle is different for different molecular geometry.

The Valence shell electron pair repulsion theory predicts the molecular geometry and shape of the given molecule by the number of lone pairs on central atom and number of atoms bonded to central atom.

(A) SO₂ molecule

The number of atoms bonded to S = 2

Number of lone pairs on S = 1

Therefore, the shape of SO₂ molecule is bent and the O-S-O bond angle is 119°.

(B) BF₃ molecule

The number of atoms bonded to B = 3

Number of lone pairs on B = 0

Therefore, the shape of BF₃ molecule is trigonal planar and the F-B-F bond angle is 120°.

(C) SCl₂ molecule

The number of atoms bonded to S = 2

Number of lone pairs on S = 2

Therefore, the shape of SCl₂ molecule is bent and the Cl-S-Cl bond angle is 103°.

(D) CO₂ molecule

The number of atoms bonded to C = 2

Number of lone pairs on C = 0

Therefore, the shape of CO₂ molecule is linear and the O-C-O bond angle is 180°.

(E) PF₃ molecule

The number of atoms bonded to P = 3

Number of lone pairs on P = 1

Therefore, the shape of PF₃ molecule is trigonal pyramidal and the F-P-F bond angle is 96.3°.

(F) CH₄ molecule

The number of atoms bonded to C = 4

Number of lone pairs on C = 0

Therefore, the shape of CH₄ molecule is tetrahedral and the H-C-H bond angle is 109.5°.

7 0

3 years ago

Suppose the irregularly shaped object is a massive whale shark that is about to be moved into a cube-shaped aquarium tank. how m

Vitek1552 [10]

Answer:

hc.cxcx.utgjc bm.kgbmgc ,;n khv /k l.;NNNNNFHJNSCJFIHDJASKNSCBDFIHACJOLN BKOHVJEASM;VNLDOHJF

3 0

3 years ago

Read 2 more answers

What is the limiting reactant if 12 moles of p4 react with 15 moles of o2?.

brilliants [131]

Answer:

see explanation

Explanation:

To determine limiting reactant divide mole quantities of reactants by the respective coefficient in the balanced equation. The smaller value is the limiting reactant.

P₄ + 5O₂ => 2P₂O₅

12/1 = 12 15/5 = 3

O₂ is the limiting reactant. P₄ will be in excess when rxn stops.

4 0

1 year ago