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3 years ago

Which of the following statements is TRUE?

Chemistry

1 answer:

Flura [38]3 years ago

7 0

Answer:

c. An ionic bond is much stronger than most covalent bonds

Explanation:

Ionic bonds are interatomic bonds that forms as a result of electrostatic attraction between two ions. For an ionic bond to be formed, one atom must have lost or gained electron from another that is transferring it. Ionic bonds typically form between atoms whose electronegativity differences are far apart.

Ionic bonds are usually stronger than other types of bonds due to the electrostatic attraction between ions.

One very distinct feature about ionic compounds is that they are conductors of electricity in either molten or aqueous. At room temperature, they are solids and contains no mobile ions.

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calcium and strontium are close to one another on thw oeriodic table. what do you know about their ionization energies ,their el

Firdavs [7]

Both Ca and Sr are in Group 2 of the Periodic Table, with Sr below Ca (see image)..

Ionization energies

They are both metals, so they have relatively low ionization energies.

Sr is below Ca in the Group, so Sr has the lower ionization energy.

Electron configurations

Their electron configurations both end in ns².

For example, the electron configuration of Ca is [Kr]4s² and that of Sr is [Kr]5s².

Physical chsrscteristics:

metallic lustre
malleable
ductile
good conductors of heat and electricity

Chemical characteristics

Both metals react with

• Hydrogen to form hydrides: M + H₂ ⟶ MH₂

• Oxygen to form oxides: 2M + O₂ ⟶ 2MO

• Nitrogen to form nitrides: 3M + N₂ ⟶ M₃N₂

• Halogens to form halides: M + X₂ ⟶ MX₂

• Water to displace hydrogen: M + 2H₂O ⟶ M(OH)₂ + H₂

4 0

3 years ago

Key terms: Reset Compounds that contain a carbon-carbon double bond are known as ____________ . Alkenes are electron rich; there

Damm [24]

Answer: Compounds that contain a carbon-carbon double bond are known as _____alkenes_______ . Alkenes are electron rich; therefore, simple alkenes do not react with _____nuceophiles_______ or bases, but will react with _____electrophiles_______ or acids. In the IUPAC system, an alkene is identified by the suffix _____-ene_______ . Addition reactions in which two parts of a reagent are added to the same side of a double bond are known as _____syn_______ additions. Addition reactions in which two parts of a reagent are added from opposite sides of a double bond are called _____anti_______ additions. Halogenation and halohydrin formation occur with _____anti_______ addition. Hydroboration occurs with _____syn_______ addition.

Explanation:

The right terms have been filled into the statement.

Electrophiles are election rich so they react with nucleophiles. And vice versa.

Addition reactions in which two parts of a reagent are added to the same side of a double bond are known as _syn reaction and that involving opposite is anti reaction.

The Halohydrin formation reaction involves breaking a pi bond and creating a halohydrin in its place. Halo = halogen and Hydrin = OH. This reaction takes place in water and yields an anti-addition reaction which follows Markovnikov's rule.

8 0

3 years ago

In the formula

faust18 [17]

Answer: remove a H2 molecule from the left side of the equation

Explanation:

6 0

3 years ago

Which expression represents a reaction rate?a. time/massc. energy/timeb. number/timed. time/energy

Kitty [74]

The right answer for the question that is being asked and shown above is that: "b. number/timed." Reaction Rate refers to the speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow are action takes place.

4 0

3 years ago

Read 2 more answers

If the partial pressure of oxygen outside of a cell is 100 mmHg and the partial pressure of oxygen inside of a cell is 25 mmHg,

mrs_skeptik [129]

" There will be a net movement of oxygen from outside the cell to inside the cell " Statement is True.

Explanation:

The partial pressure for oxygen in alveoli is greater under normal circumstances, and oxygen moves neatly into the blood. In addition, the partial carbon dioxide pressure throughout the blood usually is higher, such that carbon dioxide migrate clearly into the alveoli.

The few common molecules which can traverse the cell membrane by absorption (or diffusion of a sort recognized as osmosis) are water, carbon dioxide and oxygen. Metabolism is typically oxygen-needed, which is lowest in the cell within the animal and plant, so that net oxygen flows to the cell.

3 0

3 years ago