1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
-Dominant- [34]
3 years ago
8

Electronegativity _____. generally increases moving from left to right across a period generally decreases moving from left to r

ight across a period generally increases moving from right to left across a period generally decreases moving from right to left across a period
Chemistry
2 answers:
torisob [31]3 years ago
8 0

Answer: generally increases moving from left to right across a period

Explanation:

Electronegativity is defined as the property of an element to attract a shared pair of electron towards itself. The size of an atom decreases as we move across the period because the electrons get added to the same shell and the nuclear charge keeps on increasing. Thus the electrons get more tightly held by the nucleus.

As, the size of an element decreases, the valence electrons come near to the nucleus. So, the attraction between the nucleus and the shared pair of electrons increases.

Hence, the correct statement is electronegativity generally increases moving from left to right across a period

mojhsa [17]3 years ago
7 0
I believe the correct answer would be that electronegativity generally increases moving from left to right across a period. The periodic table of elements is arranged so that trends of the properties of the elements can be shown. For electronegativity, it decreases from right to left which means for the opposite direction it increases.
You might be interested in
Help me get this done today please no wrong answer
myrzilka [38]

Answer:

d.

Explanation:

proposed the ring structure for benezene

5 0
2 years ago
Acidic substances will taste _____
choli [55]

Answer:False, we can sense four tastes, namely salty, sweet, sour and bitter. Acids taste sour. If we want to know if something is an acid, we can just taste it.

Explanation:

5 0
3 years ago
An astronomer wants to study celestial objects with the shortest wavelengths. What kind of telescope should the astronomer use f
Leni [432]

Answer:

telescope

Explanation:

i took the test

8 0
3 years ago
ammonium phosphate is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with
Kaylis [27]

Answer:

0.57 moles (NH4)3PO4 (2 sig. figs.)

Explanation:

To quote, J.R.

"Note:  liquid ammonia (NH3) is actually aqueous ammonium hydroxide (NH4OH) because NH3 + H2O -> NH4OH.

H3PO4(aq) + 3NH4OH(aq) ==> (NH4)3PO4 + 3H2O  

Assuming that H3PO4 is not limiting, i.e. it is present in excess

1.7 mol NH4OH x 1 mole (NH4)3PO4/3 moles NH4OH = 0.567 moles = 0.57 moles (NH4)3PO4 (2 sig. figs.)"

3 0
3 years ago
What's ligand and how are they classified​
KATRIN_1 [288]

Explanation:

<u>Ligands:</u> In co-ordination chemistry ligands are ion, molecule or any species which donates electron pair to central metal atom.

Depending on the type of interaction Ligands are of three types.

  1. Sigma donor only
  2. sigma as well as pi donor
  3. pi acceptor ligand

let's understand each type of Ligands individually & in more detail.

1 - Sigma donor only: This is a unidirectional interaction, in which filled ligand overlaps (head to head) with central metal atom/ion & donates pair of electron in the LUMO of metal.

generally all the molecules of 2nd period without pi bond comes in this category, below are few example of sigma donor ligands,

\small \sf NH_3, H_2O, CH_3^-, H^-, R-OH, R-NH_3, etc

2- Pi donor: This in also a unidirectional interaction between ligand & central metal atom but the along with head to head overlap, side overlapping takes place.

generally protonated neutral molecules who have more than one pair to donate show such interaction, for e.g.

NH3 have two lone pair to donate but the energy level of both the lone pairs are different hence when it is neutral it only donates one pair of electron. but when NH3 is protonated to NH2- it have two electron pairs (negative charge+ lone pair) to donate & both the pairs have same energy level. example of such ligands are below,

\sf \small NH_2^-, OH^-, R-O^-, R-NH^-, F^-, Cl^-, Br^- SH^- etc

3- Pi acceptor ligand: This is a bidirectional interaction between ligand & central metal atom/ion, the filled orbital of ligand undergoes head to head to overlap with vacant orbital of central metal atom, & filled D orbital of central metal donates their pair to vacant LUMO of ligand.

depending on the LUMO pi acceptor ligands are further classified into two categories.

d\pi - \sigma*   \small \sf When  \: lumo \:  is  \: \sigma*\\ d\pi - \pi*   \small \: \sf When  \: lumo  \: is  \: \pi*

The dπ-σ* is seen in molecules of 3rd period onwards without pi bond <em>for e.g.</em>

<em>PH3,</em><em> </em><em>PR</em><em>3</em><em>,</em><em> </em><em>AsR</em><em>3</em><em> </em><em>&</em><em> </em><em>SR</em><em>2</em><em> </em><em>etc</em>

The dπ-π* is seen in molecules of 2nd or3rd period with pi bond <em>for e.g.</em>

CO C N- SC N^- etc

<em><u>Thanks for joining brainly community!</u></em>

8 0
2 years ago
Other questions:
  • Tim wants to store 0.122 moles of helium gas at 203 kPa and 401 K. Which is the volume of the helium gas needed for storage?
    8·1 answer
  • At physiological ph, the ionized state of the carboxyl (cooh) group in the r group of aspartic acid is:
    7·1 answer
  • The equation shown represents cellular respiration. Glucose + X → Y + Water + Energy What do X and Y most likely represent? X re
    13·1 answer
  • Both __________ and __________ can be classified as pure substances because they have distinct properties and composition.
    13·1 answer
  • Which statement describes an arrhenius acid?
    12·2 answers
  • For the following chemical reactions, determine the precipitate produced when the two reactants listed below are mixed together.
    7·1 answer
  • Help pls what is the (H+) of a solution with a pH of 4?
    15·2 answers
  • Annual precipitation rates can be collected for several years added together and divided by the number of years to obtain an ave
    14·1 answer
  • A student rubbed a plastic comb with a piece of silk cloth. She held the comb near running water and saw that the stream of
    14·2 answers
  • Latitude affects climate by?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!