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
tensa zangetsu [6.8K]
3 years ago
13

Select the number of valence electrons for fluorine.

Chemistry
2 answers:
Arte-miy333 [17]3 years ago
6 0
Seven valence electrons is your answer
solniwko [45]3 years ago
6 0

Answer : The number of valence electrons in fluorine are, seven.

Explanation :

As we know that the fluorine is a non-metal element that belongs to the group 17 and period 2. The symbol of fluorine element is, (F) and the atomic number of fluorine is, 9.

The electronic configuration of fluorine is, 1s^22s^22p^5

Electronic configuration : It is defined as the distribution of electrons of an atom in an atomic orbitals.

From the electronic configuration, we conclude that the number of valence electrons present in fluorine is, seven (7).

Hence, the number of valence electrons in fluorine are, seven.

You might be interested in
What is one observation you can make aboit venus​
PilotLPTM [1.2K]

Answer:

The temperature is very hot.

Explanation:

The gas around the planet traps the suns heat and makes it the hottest planet in our solar system.

8 0
3 years ago
A forest has a stable population of approximately 100 great horned owls. The owls nest in hollow trees, eat small animals, and h
CaHeK987 [17]
The answer is B. The carrying capacity will decrease, forcing the population to decrease as well.
4 0
3 years ago
Read 2 more answers
Since electrons ___ each other, electrons pairs will be as _____ apart as possible
ELEN [110]

We have to answer based on basic concept on electron.

The correct answer is: Since electrons repel each other, electrons pairs will be as far apart as possible.

We know, electrons are negatively charged particles and  negatively charged particles  repel to each other.

When electrons which are of similar charge repel each other, they go far apart from each other..

4 0
2 years ago
When a student mixes 50 mL of 1.0 M HCl and 50 mL of 1.0 M NaOH in a coffee-cup calorimeter, the temperature of the resultant so
zmey [24]

Answer: 54.4 kJ/mol

Explanation:

First we have to calculate the moles of HCl and NaOH.

\text{Moles of HCl}=\text{Concentration of HCl}\times \text{Volume of solution}=1.0M\times 0.05=0.05mole

\text{Moles of NaOH}=\text{Concentration of NaOH}\times \text{Volume of solution}=1.0\times 0.05L=0.05mole

The balanced chemical reaction will be,

HCl+NaOH\rightarrow NaCl+H_2O

From the balanced reaction we conclude that,

As, 1 mole of HCl neutralizes by 1 mole of NaOH

So, 0.05 mole of HCl neutralizes by 0.05 mole of NaOH

Thus, the number of neutralized moles = 0.05 mole

Now we have to calculate the mass of water:

As we know that the density of water is 1 g/ml. So, the mass of water will be:

The volume of water = 50ml+50ml=100ml

\text{Mass of water}=\text{Density of water}\times \text{Volume of water}=1g/ml\times 100ml=100g

Now we have to calculate the heat absorbed during the reaction.

q=m\times c\times (T_{final}-T_{initial})

where,

q = heat absorbed = ?

c = specific heat of water = 4.18J/g^oC

m = mass of water = 100 g

T_{final} = final temperature of water = 27.5^0C

T_{initial} = initial temperature of metal = 21.0^0C

Now put all the given values in the above formula, we get:

q=100g\times 4.18J/g^oC\times (27.5-21.0)^0C

q=2719.6J=2.72kJ

Thus, the heat released during the neutralization = 2.72 KJ

Now we have to calculate the enthalpy of neutralization per mole of HCl:

0.05 moles of HCl releases heat = 2.72 KJ

1 mole of HCl releases heat =\frac{2.72}{0.05}\times 1=54.4KJ

Thus the enthalpy change for the reaction in kJ per mol of HCl is 54.4 kJ

6 0
2 years ago
Read 2 more answers
an isotope of cesium (cesium-137) has a half-life of 30 years if 1.0g of cesium-137 disintegrates over a period of 90 years how
Juliette [100K]
The answer is after 3 half lives
4 0
3 years ago
Other questions:
  • An atom is composed of protons, neutrons, and electrons. What is the electric
    13·1 answer
  • Why is the electronegativity of an element important?
    10·2 answers
  • A thermos contains 150 cm3 of coffee at 85 ????C. To cool the coffee, you drop two 11-g ice cubes into the thermos. The ice cube
    12·1 answer
  • Fill in the blank:<br><br> Aspirin is a ____ of materials.
    15·1 answer
  • ASAP MULTIPLE CHOICE
    7·1 answer
  • A sample of wood that originally contained 100 grams of carbon-14 now contains only 25 grams of carbon-14. approximately how man
    15·1 answer
  • What minimum energy is required to excite a vibration in HCl?
    7·1 answer
  • What is the theoretical yield of Li3N in grams when 12.7 g of Li is heated with 34.7 g of N2
    13·1 answer
  • Identify the outer electron configurations for the (a) alkali metals, (b) alkaline earth metals, (c) halogens, (d) noble gases.
    10·1 answer
  • Is the formal charge on N the same or different in these two species? Is the formal charge on the same or different in these two
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!