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
Assoli18 [71]
3 years ago
6

Group 1A element sodium combines with Group 7A element chlorine to form sodium chloride or table salt. Based on this information

, which expression is true about the electronegativity values of these two elements? Na > Cl Na < Cl Na = Cl We cannot make a prediction with the data provided. NextReset
Chemistry
1 answer:
Ymorist [56]3 years ago
8 0
The answer is Na < Cl

Chlorine is more electronegative than sodium because this follows the trend of the periodic table. The trend states that an element's electronegativity increases from left to right of a period and bottom to up of a group. Since sodium and chlorine are from the same period, and chlorine is at the right of sodium, chlorine is more electronegative. 
You might be interested in
A scientist prepared an aqueous solution of a 0.45 M weak acid. The pH of the solution was 2.72. What is the percentage ionizati
aleksandr82 [10.1K]

Answer:

0.42%

Explanation:

<em>∵ pH = - log[H⁺].</em>

2.72 = - log[H⁺]

∴ [H⁺] = 1.905 x 10⁻³.

<em>∵ [H⁺] = √Ka.C</em>

∴ [H⁺]² = Ka.C

∴ ka = [H⁺]²/C = (1.905 x 10⁻³)²/(0.45) = 8.068 x 10⁻⁶.

<em>∵ Ka = α²C.</em>

Where, α is the degree of dissociation.

<em>∴ α = √(Ka/C) </em>= √(8.065 x 10⁻⁶/0.45) = <em>4.234 x 10⁻³.</em>

<em>∴ percentage ionization of the acid = α x 100</em> = (4.233 x 10⁻³)(100) = <em>0.4233% ≅ 0.42%.</em>

4 0
3 years ago
Read 2 more answers
I need help on dis chem shi if y’all can answer fa me I would appreciate dat
elena55 [62]
I think it’s A I’m not 100% sure but I mean it’s worth a try
3 0
3 years ago
*blank* carry blood away from the heart, while *blank* carry blood back to the heart.
worty [1.4K]

Answer:

i think its C im not so sure

Explanation:

nrjdkfkzhsugogo

5 0
3 years ago
WILL GIVE BRAINLIEST! Explain how a pure metal is held together. Include a definition of a metallic bond in your explanation. Pl
vazorg [7]

Explanation:

A chemical bond which is formed in between positively charged atoms when there is sharing of free electrons in a lattice of cations is known as a metallic bond.

In a pure metal, atoms are surrounded by free moving valence electrons which move from one part of metal to another.

Thus, we can conclude that pure metals are held together by metallic bonds due to attraction between mobile valence electrons and positively charged metal ions.


7 0
3 years ago
Read 2 more answers
A reaction between an acid and a base produced lithium chloride (LiCl). What acid and base combination could produce this salt?
dolphi86 [110]

C sulfuric acid and  magnesium hydroxide

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the simplest formula for Sr4S4?
    12·1 answer
  • Who proposed a heliocentric model of the solar system
    10·2 answers
  • The mass of an object will be the same on the Earth as it is on the Moon.<br><br><br> NEED HELP ASAP
    9·1 answer
  • Do all waves need a material to travel through? HELPPPP
    15·1 answer
  • On a cool morning, uyen’s breath can form a cloud when she breathes out. which changes of state are most responsible for uyen se
    14·2 answers
  • What was the velocity over the entire trip? <br><br> A. -2<br> B. -1<br> C. 0<br> D. 1<br> E. 2
    10·1 answer
  • PLEASE HELP!!!!!!!!
    8·1 answer
  • List out the effects seen inplants due to lack of phosphorus.​
    6·1 answer
  • Currently doing a quiz, who ever can help me first gets brainliest!
    8·2 answers
  • How many moles of hydrogen gas would be required to produce 25 moles of H2O?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!