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mina [271]
3 years ago
9

What kind of bond is present in NaBr?

Chemistry
2 answers:
FinnZ [79.3K]3 years ago
5 0

<u>Answer:</u>

<em>D Ionic bond </em>

<em></em>

<u>Explanation:</u>

Atomic number = number of electrons = number of protons.

Atomic number of sodium is 11

So the atom contains 11 protons and 11 electrons

To find the number of neutrons we make use of the formula  

Mass number - atomic number = number of neutrons

From the periodic table we know mass number of sodium is 23

So number of neutron = 23 - 11 = 12.

When a sodium atom loses an electron it will have 11 positive protons and 10 negative electrons. Since 1 positive charge is more Na becomes Na^+.

Positively charged ion is called as cation

Bromine atomic number is 35 so it has 35 protons and 35 electrons.

When it gains an electrons it will have 35 positive protons and 36 negative electrons since 1 negative charge is more Br becomes Br^-.

Negatively charged ion is called as anion.

The electrostatic attraction between Na^+ and Br^- due to the opposite charges gets attracted and forms a bond called ionic bond in NaBr

Look at the diagram of NaCl for example  

Nostrana [21]3 years ago
3 0

Answer:

D. Ionic bond

Explanation:

Sodium loses an electron to bromine

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the number of carbon and hydrogen atoms present in the molecule of Ethane that is it contains two carbon atoms and six hydrogen atoms

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What is an electrolyte in an electrochemical cell?
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At a pressure of 650 kpa 2.2L of hydrogen is used to fill a balloon to a final pressure of 115 kpa. What's the balloons volume?
Alborosie

Answer:

V₂ = 12.43 L

Explanation:

Given data:

Initial pressure = 650 KPa

Initial volume = 2.2 L

Final pressure = 115 KPa

Final volume = ?

Solution:

The given problem will be solved through the Boyles law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

650 KPa ×2.2 L = 115 KPa × V₂

V₂ = 1430 KPa. L/ 115 KPa

V₂ = 12.43 L

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3 years ago
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