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
Lynna [10]
2 years ago
6

Can you show me the answer and explain?

Chemistry
1 answer:
Hitman42 [59]2 years ago
6 0

Answer:

C

Explanation:

looking at a periodic table X is fluorine and Y is potassium

Fluorine is in group 7 and forms a 1- charge (which gains electrons) and potassium is in group 1 and forms a 1+ charge (which loses electrons)

Fluorine (X) has an electronic structure of 2,7 and needs to gain an electron from Potassium (Y) to have a full outer shell and potassium has an electronic structure of 2,8,8,1 so needs to lose an electron to have a full outer shell as well. This means that the electron that potassium (Y) has lost is given away to fluorine (X), so both elements become stable.

This is known as ionic bonding where metals (like potassium) lose electrons and non-metals (like fluorine) gain electrons to become more stable, forming ions

Any further clarification let me know

You might be interested in
What is the amount of heat energy absorbed when 36 grams of ice at -20oC is melted to water at 0oC?
Ulleksa [173]

Answer:

Q = 1461.6 J

Explanation:

Given data:

Mass of ice = 36 g

Initial temperature = -20°C

Final temperature = 0°C

Amount of heat absorbed = ?

Solution:

specific heat capacity of ice is 2.03 j/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  0°C - (-20°C)

ΔT = 20°C

Q = 36 g ×2.03 j/g.°C×20°C

Q = 1461.6 J

3 0
2 years ago
Determine the volume, in liters, of 3.2 mol of CO2 gas at STP.
Allushta [10]

Answer:

71.7 L

Explanation:

Using the ideal gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/Kmol)

T = temperature (K)

According to the information provided in this question;

P = 1 atm (STP)

V = ?

n = 3.2mol

T = 273K (STP)

Using PV = nRT

V = nRT/P

V = 3.2 × 0.0821 × 273/1

V = 71.7 L

6 0
3 years ago
What is the hydrogen ion (H+) concentration of a solution of pH 8?
fgiga [73]

Answer:

10−8 M.

Explanation:

In this problem we are given pH and asked to solve for the hydrogen ion concentration. Using the equation, pH = − log [H+] , we can solve for [H+] as,

− pH = log [H+] ,

[H+] = 10−pH,

by exponentiating both sides with base 10 to "undo" the common logarithm. The hydrogen ion concentration of blood with pH 7.4 is,

[H+] = 10−7.4 ≈ 0.0000040 = 4.0 × In this problem we are given pH and asked to solve for the hydrogen ion concentration. Using the equation, pH = − log [H+] , we can solve for [H+] as,

− pH = log [H+] ,

[H+] = 10−pH,

by exponentiating both sides with base 10 to "undo" the common logarithm. The hydrogen ion concentration of blood with pH 7.4 is,

[H+] = 10−7.4 ≈ 0.0000040 = 4.0 × 10−8 M.

3 0
2 years ago
Read 2 more answers
Which physical property will change if the amount of the sample changes?​
kramer

Answer:

Extensive Properties

Explanation:

A physical property that will change if the amount of matter changes. Change in which the matter's physical appearance is altered, but composition remains unchanged. Solid is distinguished by a fixed structure. Its shape and volume do not change.

6 0
3 years ago
What happens where Earth's plates meet?
anzhelika [568]

Answer:

an earthquake

Explanation:

the tectonic plates rub together sending shockwaves

4 0
3 years ago
Other questions:
  • Prove that an element has an order in an abelian group
    13·1 answer
  • What is the name of the state when electrons absorb energy and move to a higher energy level?
    12·1 answer
  • Which diagram shows a pair of electrons that have opposite spins?<br> OT<br> 11<br> 11<br> 个个
    13·2 answers
  • PLEASE HELP WILL MARK AS BRAINEST!!!!!!!!!!!!
    10·1 answer
  • V _ionic or compound
    8·1 answer
  • Gawk gawk? smeat muh meat​
    8·2 answers
  • How much heat is required to raise the temperature of 18 grams of liquid water by 25 C?
    15·1 answer
  • Calculate the number of moles in 125g of Copper (II) Hydroxide. URGENT!
    11·1 answer
  • Look at the two question marks between zinc (zn) and arsenic (as). at the time, no elements were known with atomic weights betwe
    9·1 answer
  • (b) Calculate the temperature of the product mixture if the methane and air are both at an initial temperature of 0.0°C. Assume
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!