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3 years ago

State the location and the total charge of the protons in a Ni-64 atom.

Chemistry

2 answers:

Pani-rosa [81]3 years ago

7 0

Answer : The location of proton is nucleus and the total charge of the protons in a Ni-64 atom is +28 charge.

Explanation :

As we know that an atom is the smallest unit of a matter that consist of three subatomic particles which are electrons, protons and neutrons.

The protons and the neutrons are located inside the nucleus or center of the nucleus where the mass of the an atom is concentrated and the electrons are located around the nucleus.

The protons are positively charged, the electrons are negatively charged and the neutrons are neutral that means it has no charge.

The isotopic representation of an atom is: $_Z^A\textrm{X}$

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

As we are given $^{64}_{28}Ni$ atom.

Atomic number of Ni atom = 28

Mass number of Ni atom = 64

As we know that the atomic number is equal to the number of protons and 1 proton has (+1) charge.

The number of protons in a Ni atom is 28 and charge of the protons in a Ni atom is (+28).

Hence, the location of proton is nucleus and the total charge of the protons in a Ni-64 atom is +28 charge.

blsea [12.9K]3 years ago

6 0

Location = nucleus ,
and you can see the total charge on the number that written below the substance, which would be 28+

hope this helps

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What mass of ni has as many atoms as there are n atoms in 63.0 g of no2?

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First we have to calculate the number of moles.

$\text{Moles of }NO_2=\frac{\text{Mass of }NO_2}{\text{Molar mass of }NO_2}=\frac{63g}{46g/mole}=1.369moles$

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As 1 moles $NO_2$ contains $6.022\times 10^{23}$ number of molecules

So, 1.369 moles $NO_2$ contains $1.369\times 6.022\times 10^{23}$ number of molecules

One $NO_2$ molecule has one nitrogen atom then $1.369\times 6.022\times 10^{23}$ number of molecules of $NO_2$ will contain $1.369\times 6.022\times 10^{23}$ number of nitrogen atoms

As per question number of Ni atoms is equal to the number of nitrogen atoms

Number of Ni atoms= $1.369\times 6.022\times 10^{23}$ atoms

Number of moles = $\frac{1.369\times 6.022\times 10^{23}}{6.022\times 10^{23}}=1.369moles$

Mass of Nickel = $Moles\times \text{Molecular mass}}$

Molecular mass of Nickel = 58.69 g/mol

Mass of nickel = $1.369mol\times 58.69g/mol=80.346grams$

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Answer:

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