All categories

3 years ago

When a atom gets smaller, what happens to the electronegativity ?

Chemistry

1 answer:

Alexus [3.1K]3 years ago

6 0

Answer:

Increases electronegativity.

Explanation:

Hit that Thanks button, pls.

You might be interested in

Hydrocyanic acid, HCN, is a weak acid. (a) Write the chemical equation for the dissociation of HCN in water. (b) Identify the Br

12345 [234]

Answer: a) $HCN(aq.)+H_2O\rightleftharoons H_3O^+(aq.)+CN^-(aq.)$

b) $HCN$ : acid $CN^-$ :conjugate base.

And, $H_2O$ : base $H_3O^+$ : conjugate acid.

c) $HCN(aq.)+NaOH(aq)\rightleftharoons NaCN(aq.)+H_2O(l)$

d) $NaCN(aq)\rightarrow Na^+(aq.)+CN^-(aq)$

e) $NaCN(aq)+HCl(aq)\rightarrow NaCl(aq.)+HCN(aq)$

Explanation:

a) Weak acid is defined as the acid which does not completely dissociates when dissolved in water. They have high pH. These releases $H^+$ ions in their aqueous states.

The equation for the dissociation of $HCN$ acid is given by:

$HCN(aq.)+H_2O\rightleftharoons H_3O^+(aq.)+CN^-(aq.)$

b) According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.

For the given chemical equation:

$HCN$ is loosing a proton, thus it is considered as an acid and after losing a proton, it forms $CN^-$ which is a conjugate base.

And, $H_2O$ is gaining a proton, thus it is considered as a base and after gaining a proton, it forms $H_3O^+$ which is a conjugate acid.

c) Neutralization reaction is a reaction in which an acid reacts with base to produce salt and water.

$HCN(aq.)+NaOH(aq)\rightarrow NaCN(aq.)+H_2O(l)$

d) The chemical equation for dissociation of $NaCN$ in water.

$NaCN(aq)\rightarrow Na^+(aq.)+CN^-(aq)$

e) The chemical equation for the reaction of $NaCN$ and $HCI$

$NaCN(aq)+HCl(aq)\rightarrow NaCl(aq.)+HCN(aq)$

4 0

3 years ago

Which property is an intensive, rather than an extensive, property of matter?

Drupady [299]

The correct answer is A, Volume

7 0

3 years ago

What are the four body systems that are involved of getting oxygen in our cells ?

Alex17521 [72]

Answer: The cells that make up the digestive, muscular, skeletal, reproductive, and excretory systems all need oxygen from the respiratory system to function, and the cells of the respiratory system—as well as all the other systems—need nutrients and must get rid of metabolic wastes.

Explanation:

8 0

3 years ago

For the α anomer of a D-sugar, the anomeric hydroxyl in a Haworth projection a. has an upward projection (on the same side as th

vfiekz [6]

Answer:

The correct option is: b. has a downward projection (on the opposite side from the terminal CH₂OH group).

Explanation:

The Haworth Projection depicts the three-dimensional cyclic structure of the monosaccharides.

The monosaccharide, D-glucose predominantly exists in the pyranose form and is known as D-glucopyranose. The D-glucopyranose has two anomeric forms: α- and the β- form and the carbon-1 (C-1 ) is known as the anomeric carbon.

In the Haworth projection of α-D-glucopyranose, the hydroxyl group of anomeric carbon is projected in the downward direction. Whereas, the terminal CH₂OH group on the carbon-5 (C-5), is projected in the upward direction. Therefore, they are on the opposite sides of the plane of ring.

7 0

3 years ago

13. All are decomposed by heat except A BaCO₃ B CuCo₃ C ZnCO₃ D Ag₂CO₃

jenyasd209 [6]

The correct answer is option ( D ) Ag2Co3

it cannot be decomposed by heat

Hope it helps you

Mark my answer as brainlist

have a nice day

4 0

2 years ago