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
IRISSAK [1]
4 years ago
8

Which of the following elements has the highest electronegativity? hydrogen carbon chlorine fluorine

Chemistry
2 answers:
kolbaska11 [484]4 years ago
8 0

Answer:

fluorine has the highest electronegativity

Explanation:

electronegativity values ;                                                                                                        fluorine=4.0                                                                                                                                chlorine=3.2                                                                                                                                carbon=2.6             as the electronegativity increases when we move along a period ,so electronegativity of fluorine is highest than carbon,hydrogen

Alexandra [31]4 years ago
5 0

Fluorine has the highest electronegativity.

Answer: D

Explanation

Electronegativity is the ability of the elements to attract free electrons towards them in order to form ionic or covalent bonds.

The electronegativity value is quantized generally by the maximum number of electrons they can attract towards them to attain the stable octate number in their outermost shell.

In other words , the electronegativity number is quantized by Pauling's rule and it has been found that the electronegativity decreases from top to bottom in a group and increases from left to right in a period.

So by this it can be confirmed that fluorine has the highest electronegative element as it is located in the 2nd period and before the noble element.

As the noble elements do not have any electronegativity , fluorine is the last element in the 2nd row and thus it is most electronegative element.

You might be interested in
Recall all the models you described in task 1. Think about the results each model would predict for Thomson’s experiment. Which
Bumek [7]

Answer:

J.J. Thomson’s experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged “soup.”

4 0
3 years ago
After researching the possible effects of music, Elaina proposes that if people listen to faster-paced music, their pulse rates
SCORPION-xisa [38]

Answer:

Elaina's scientific investigation is missing controlled variables.

Explanation:

A good scientific investigation should vary only the factor that is studied (the speed of the music. All other factors should be kept constant.

She hasn’t controlled for <em>volume</em>. The volume of the music may affect the rate at which the listener’s heart rate will increase. She should have measured each person’s pulse after the same period of listening.

She hasn’t controlled for <em>age</em>. A grandmother may respond to loud music differently from a teenager. All her subjects should be about the same age.

She hasn’t controlled for <em>wakefulness</em>. A person may respond to music differently when awake than when asleep.

7 0
4 years ago
During a combustion reaction, 9.00 grams of oxygen reacted with 3.00 grams of CH4.
Monica [59]

Answer:

0.74 grams of methane

Explanation:

The balanced equation of the combustion reaction of methane with oxygen is:

  • CH₄ + 2 O₂ → CO₂ + 2 H₂O

it is clear that 1 mol of CH₄ reacts with 2 mol of O₂.

firstly, we need to calculate the number of moles of both

for CH₄:

number of moles = mass / molar mass = (3.00 g) /  (16.00 g/mol) = 0.1875 mol.

for O₂:

number of moles = mass / molar mass = (9.00 g) /  (32.00 g/mol) = 0.2812 mol.

  • it is clear that O₂ is the limiting reactant and methane will leftover.

using cross multiplication

1 mol of  CH₄ needs → 2 mol of O₂

???  mol of  CH₄  needs → 0.2812 mol of O₂

∴ the number of mol of CH₄ needed = (0.2812 * 1) / 2 = 0.1406 mol

so 0.14 mol will react and the remaining CH₄

mol of CH₄ left over = 0.1875 -0.1406 = 0.0469 mol

now we convert moles into grams

mass of CH₄ left over = no. of mol of CH₄ left over *  molar mass

                                    = 0.0469 mol * 16 g/mol = 0.7504 g

So, the right choice is 0.74 grams of methane

3 0
3 years ago
A car is traveling at 87.0 km/hr. How many meters will it travel in 37.0 seconds?
Alenkasestr [34]

Speed of the car = 87.0 \frac{km}{hr}

Given time = 37.0 s

Converting time from seconds to hours:

1 hr= 60 min; 1 min = 60 s

37.0 s * \frac{1 min}{60s}*\frac{1 hr}{60min}  = 0.0103 hr

Calculating distance from speed and time:

0.0103 hr * \frac{87.0 km}{1 hr} =0.894 km

Converting distance from km to m:

0.894 km * \frac{1000 m}{1 km} = 894 m

So the distance traveled by the car in 37.0 s is 894 m.

5 0
3 years ago
Does each state get the same number of votes in the electoral college
MAXImum [283]

Each state is allocated a number of electors equal to the number of its U.S. Senators



8 0
4 years ago
Other questions:
  • The ksp for silver(i) phosphate is 1.8 x 10 –18 . determine the silver ion concentration in a saturated solution of silver(i) ph
    13·1 answer
  • How many moles of molecular oxygen (o2) are consumed in the complete combustion of one mole of pentane (c5h12)?
    10·1 answer
  • Of the following species, ________ will have bond angles of 120°. A) PH3 B) ClF3 C) NCl3 D) BCl3 E) All of these will have bond
    6·1 answer
  • Ionic compound of potassium fluoride.​
    5·2 answers
  • Two examples of decomposers​
    12·2 answers
  • Which salt is formed by the reaction between hydrochloric acid and sodium hydroxide, write with chemical equation. .​
    6·1 answer
  • All acids and alkais are<br> dangerous to us to what extent is that statment true​
    7·1 answer
  • A chemist prepares a solution of silver(I) nitrate AgNO3 by measuring out 62.3μmol of silver(I) nitrate into a 50.mL volumetric
    6·1 answer
  • Can some one help with this question too??
    8·1 answer
  • Which of the following is an indication of a chemical reaction?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!