All categories

3 years ago

When hydrogen is attached to a more electronegative element?

Chemistry

2 answers:

MA_775_DIABLO [31]3 years ago

6 0

Answer:

When hydrogen is attached to a more electronegative element, the electronegative atom becomes partially negative and the hydrogen atom becomes partially positive

Explanation:

Electronegativity is the tendency of an atom to draw electrons closer to itself when it is bound to another different chemical element through a covalent bond, that is, where electrons share, considering that molecule as isolated.

Because of electronegativity when a hydrogen atom is covalently bonded to a more electronegative atom, the hydrogen electron is strongly attracted to the other atom, leaving hydrogen partially positive.

Take for example an HCl molecule. The chlorine atom attracts electrons with greater intensity than hydrogen. Therefore, we say that chlorine is more electronegative than hydrogen. This forms an electric dipole (μ), which are two electric monopoles, with electrons tending to be more attracted to chlorine. Then the H ─ Cℓ bond will have a negative partial charge on chlorine (δ-) and a positive partial charge on hydrogen (δ +). So this is a molecule with electronegativity difference and is polar.

sesenic [268]3 years ago

5 0

When hydrogen is attached to a more electronegative element, the more electronegative atom becomes partially negative.

You might be interested in

Addition of 6 M HCl to which substance will not result in gas evolution? Please explain why.A) AlB) ZnC) K2CO3D) NaNO3

Westkost [7]

Answer:

Option D ( $NaNO_3$ )

Explanation:

Acids react with metal to form salt and hydrogen gas.

Metals which are more reactive than hydrogen evolve hydrogen gas on reaction with acid.

For example:

Magnesium reacts with hydrogen chloride to form magnesium chloride and hydrogen.

2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g)

Al and Zn are more reactive than hydrogen, therefore, these metals evolve hydrogen gas on reaction with acid.

$NaNO_3$ reacts with HCl to form NaCl and nitric oxide.

$HCl+NaNO_3 \rightarrow NaCl+HNO_3$

$K_2CO_3$ reacts with HCl to form potassium chloride, carbon dioxide and water.

$HCl+K_2CO_3 \rightarrow KCl+CO_2+H_2O$

As reaction of $NaNO_3$ does not evolve any gas, therefore, the correct option is D.

3 0

4 years ago

What layer of the skin contains blood vessels, nerves and hair follicles?

LiRa [457]

Answer:

The answer to your question is Dermis

Explanation:

Below the epidermis is the dermis. This is where our blood vessels, nerve endings, sweat glands, and hair follicles are.

7 0

3 years ago

2. how are firefighters expected to deal with them

AlekseyPX

Expected to deal with what? Fires?

5 0

3 years ago

Cryosurgery uses ________ to remove skin lesions. cold heat chemicals all of these

True [87]

Extreme cold which is usually produced by liquid nitrogen. Hope that helps!

5 0

4 years ago

Which of the following has the fastest rate of spontaneous depolarization?

olya-2409 [2.1K]

The segment of the myocardial conduction framework that has the quickest rate of unconstrained depolarization is the S-A node.Depolarization goes through particular conduction pathways from the S-A hub to the A-V hub. This atrial depolarization happens at a most extreme rate of 0.3 m/sec

6 0

3 years ago