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3 years ago

Choose the predominant type of bonding as ionic, covalent, or metallic for the substance below.

Chemistry

2 answers:

bixtya [17]3 years ago

8 0

Answer: Ionic bond

Explanation: Ionic bonds form when atoms transfer electrons between each other, forming ions that are electrically attracted to each other forming a bond between them. Sodium chloride (NaCl) is a typical ionic compound.

nadya68 [22]3 years ago

5 0

It is ionic bond because of Na valency and it is alkali metal and cl is non metal and it’s valency , they both share electron and make ionic bonding .

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what two bodies of water form a key transportation route connecting the interior of Canada to the Atlantic Ocean? and its scienc

hodyreva [135]

Answer:

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Explanation:

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4 years ago

The energy of a photon needed to cause ejection of an electron from a photoemissive metal is expressed as the sum of the binding

slega [8]

Answer:

$Binding\ energy=43.43\times 10^{-20}\ J$

Explanation:

Using the expression for the photoelectric effect as:

$E=h\nu_0+\frac {1}{2}\times m\times v^2$

Also, $E=\frac {h\times c}{\lambda}$

$\nu_0=\frac {c}{\lambda_0}$

Applying the equation as:

$\frac {h\times c}{\lambda}=\frac {hc}{\lambda_0}+\frac {1}{2}\times m\times v^2$

Where,

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

c is the speed of light having value $3\times 10^8\ m/s$

$\lambda$ is the wavelength of the light being bombarded

Given, $\lambda=4.00\times 10^{-7}\ m$

$\frac {hc}{\lambda_0}$ is the binding energy or threshold energy

$\frac {1}{2}\times m\times v^2$ is the kinetic energy of the electron emitted. = $6.26\times 10^{-20}\ J$

Thus, applying values as:

$\frac{h\times c}{\lambda}=Binding\ Energy+Kinetic\ Energy$

$\frac{6.626\times 10^{-34}\times 3\times 10^8}{4.00\times 10^{-7}}\ J=Binding\ Energy+6.26\times 10^{-20}\ J$

$\frac{19.878}{10^{19}\times \:4}\ J=Binding\ Energy+6.26\times 10^{-20}\ J$

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3 years ago

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It’s D. Rutherford discovered the atomic nucleus.

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3 years ago

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3 years ago

What is the temperature (°C) of 1.75 g of O2 gas occupying 4.60 L at 1.00 atm?

julsineya [31]

Given- m= 1.75 g

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=> T=PV/nR

= 1* 2/ (1.75/32)*0.0821 K

= 2*32/1.75* 0.0821 K

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= 172.30 degrees celsius..... ANSWER

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3 years ago