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2 years ago

What must happen to an atom of magnesium in order to become a magnesium ion Mg+2?

Physics

2 answers:

patriot [66]2 years ago

8 0

Answer:

the third option

Explanation:

igomit [66]2 years ago

4 0

Answer:

Answer is: c. It must lose two electrons and become an ion.

Magnesium (Mg) is metal from 2. group of Periodic table of elements and has low ionisation energy and electronegativity, which means it easily lose valence electons (two valence electrons).

Magnesium has atomic number 12, which means it has 12 protons and 12 electrons. It lost two electrons to form magnesium cation (Mg²⁺) with stable electron configuration like closest noble gas neon (Ne) with 10 electrons.

Electron configuration of magnesium ion: ₁₂Mg²⁺ 1s² 2s² 2p⁶.

Explanation:

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An object is placed in a fluid and then released. Assume that the object either floats to the surface (settling so that the obje

Irina18 [472]

Answer:

A. Always true

Explanation:

This is because, the buoyancy force is always present whenever and object is placed in a fluid. The magnitude of this buoyancy force is always equal to the weight of the fluid displaced by the object according to Archimedes' principle. This principle is true irrespective of whether the object floats or not. When any object is inserted in a fluid, the buoyancy force is always present irrespective of whether it floats or not.

7 0

2 years ago

Read 2 more answers

Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example

ValentinkaMS [17]

Answer:

$2.02672\times 10^{-11}\ V$

Explanation:

f = Frequency = 75 Hz

B = Magnetic field = $1\times 10^{-3}\ T$

d = Diameter of cell = $7.4\ \mu m$

t = Time taken

$\omega$ = Angular frequency

The expression of emf is

$E=NAB\omega sin\omega t$

Emf is maximum when $sin\omega t=1$ and N = number of turns = 1

$E_m=AB\omega\\\Rightarrow E_m=\pi \left(\frac{d}{2}\right)^2 \times B \times 2\pi\times f\\\Rightarrow E_m=\pi \left(\frac{7.4\times 10^{-6}}{2}\right)^2\times 1\times 10^{-3}\times 2\pi\times 75\\\Rightarrow E_m=2.02672\times 10^{-11}\ V$

The maximum emf that can be generated around the perimeter of a cell in this field is $2.02672\times 10^{-11}\ V$

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2 years ago

How does a mathematical model help you understand the science concepts? Give an example.

sveta [45]

Usually describes a system by a set of variables in a set of equations established relationships between the variables and variables maybe of many types real or integer numbers Boolean values of strings for example

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2 years ago

sabendo que uma onda sonora tem um periodo de 0,002s e um comprimento de onda de 0,5m determine sua velocidade nesse meio

Artemon [7]

Answer: Sorry i need more Details. I want to help but I dont speak spanish.

Explanation: Maybe come back later with a english question. So sorry. I hope ypu have a good Day.

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2 years ago

1. Lance starts the cycling marathon with a velocity of 6.2 m/s. Lance increases

dezoksy [38]

0.4375 m/s^2

Acceleration is change in velocity over time

Change in velocity (Vf-Vi) 9.7m/s - 6.2m/s = 3.5 m/s

Time is 8 seconds

Acceleration = 3.5m/s / 8s = 0.4375 m/s^2

8 0

2 years ago