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3 years ago

Which of the following is the best name for CaF2?

Physics

2 answers:

nikdorinn [45]3 years ago

6 0

Its just Calcium Flouride because as you can see it is an Ionic bond (Ca is metal and fl is a gas usually)

Verdich [7]3 years ago

4 0

Answer: Option (a) is the correct answer.

Explanation:

When an atom donates electrons to another atom then it results in the formation of a bond known as ionic bond.

For example, atomic number of calcium is 20 and its electronic distribution is 2, 8, 8, 2. Whereas atomic number of fluorine is 9 and its electronic distribution is 2, 7. So, in order to attain stability calcium loses two electrons and fluorine will gain one electron.

Therefore, calcium will combine with two fluorine atoms resulting in formation of a $CaF_{2}$ compound known as calcium fluoride.

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Which is more reliable—using a manual stop watch or using light gates?<br> Explain.

Kitty [74]

Light gates are more reliable. When using a manual stop watch, it is difficult to stop it at an exact time. A light gate is able to detect when an object passes through a 'gate' with the infrared transmitter and receiver.

7 0

3 years ago

Which is the best definition of a parallel

Oksanka [162]

A parallel circuit exists when an electric charge flows in more than one path best describes it.

<h3>What is a Parallel circuit?</h3>

This type of circuit has branches in which the current divides and only part of it flows through any of the branch.

Parallel circuit having more than one branch therefore means that electric charge will flow in more than one path thereby making option A the most appropriate choice.

Read more about Parallel circuit here brainly.com/question/12069231

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2 years ago

Un comerciante compra 300 litros de aceite a 3 L y los vendió 5 L qué beneficio obtuvo

andre [41]

El beneficio que obtuvo es de 2 L

5 0

3 years ago

Help me plssssss will give brainliest if correct

Lina20 [59]

Answer:

electricity is the answer

3 0

2 years ago

Read 2 more answers

A 2 feet piece of wire is cut into two pieces and once a piece is bent into a square and the other is bent into an equilateral t

SpyIntel [72]

Answer:

Explanation:

Let x ft be used to make square and 2-x ft be used to make equilateral triangle.

each side of square = x/4

area of square = ( x /4 )²

Each side of triangle

= (2-x) /3

Area of triangle = 1/2 (2-x)²/9 sin 60

= √3 / 36 x (2-x)²

Total area

A = ( x /4 )² +√3 / 36 (2-x)²

For maximum area

dA/dx = 0

1/16( 2x ) -√3 / 36 x2(2-x) = 0

x / 8 - √3(2-x)/ 18 = 0

x / 8 - √3/9 + √3/18 x = 0

x ( 1/8 + √3/18 ) = √3/9

x(.125 +.096 ) = .192

x = .868 ft

3 0

2 years ago