How does Magnesium become an ion? What is the charge of the Magnesium ion?

Question

a
The magnesium atom gained two electrons. The ion has a positive two charge.
b
The magnesium atom lost two electrons. The ion has a negative two charge.
c
The magnesium atom gained two electrons. The ion has a negative two charge.
d
The magnesium atom lost two electrons. The ion has a positive two charge.
Question 16
If a dolphin swims at 1.85 m/s, how far will the dolphin have traveled after 6.0 s?

a
9.0 m
b
11 m
c
31 m
d
3.2 m

Answer 1

For the first question about magnesium becoming an ion:

The correct answer is: d The magnesium atom lost two electrons. The ion has a positive two charge.

Magnesium (Mg) has an atomic number of 12, meaning it has 12 electrons in the neutral state. To achieve a stable electronic configuration, magnesium tends to lose two electrons, forming a Mg²⁺ ion with a positive charge of +2.

For the second question about the distance traveled by the dolphin:

To find the distance traveled, you can use the formula: \[ \text{Distance} = \text{Speed} \times \text{Time} \]

Given:

• Speed = 1.85 m/s
• Time = 6.0 s

Calculating: \[ \text{Distance} = 1.85 , \text{m/s} \times 6.0 , \text{s} = 11.1 , \text{m} \]

Rounding down to the choices provided, the closest answer is: b 11 m.