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maw [93]
1 year ago
10

the atomic mass of magnesium is 24 daltons and the atomic number is 12. a. how many electrons does an electrically neutral magne

sium atom have? b. how will the atomic mass of a magnesium atom be affected if the nucleus undergoes decay and loses a neutron? what is the term for this form of magnesium?
Chemistry
1 answer:
vekshin11 year ago
3 0

Atomic Mass will be 23 the new magnesium formed will be its isotope of magnesium.

We know that,

In stable condition

Number of electrons = Number of protons

Atomic number represents number of proton .

So, here number of proton is 12

Therefore, number of electron is 12

We know that -

Atomic mass = number of protons +Number of neutron

So if magnesium loses one neutron i.e. new number of neutron is 11

then its atomic mass changes.

New atomic mass will be

Atomic mass = 12 + 11

Atomic mass = 23

This new element with atomic mass 23 and atomic number 12 is the isotope of magnesium.

To know more about isotopes

brainly.com/question/11291241

#SPJ4

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Atoms get rearranged and make up different molecules. No atoms are created nor destroyed.

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Answer: Option (5) is the correct answer.

Explanation:

It is known that the ground state electronic configuration of silicon is [Ne]3s^{2}3p^{2}.

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As Si^{4+} has a +4 charge which means that it has lost 4 electrons. Hence, the electronic configuration of Si^{4+} is 1s^{2}2s^{2}2p^{6}.

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As 2p orbital is filled after the filling of 2s orbital.

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6. The gas in a steel cylinder is at 55 °C and a pressure of 965 mmHg. What would be the temperature,
ohaa [14]

Answer:

91.4°C

Explanation:

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