Magnesium is in group II of the periodic table. How many electrons would it transfer when it reacts with oxygen and what would the charge be on its ion?
8%
1 electron, +1 ion
81%
2 electrons, +2 ion
12%
3 electrons, +2 ion
0%
4 electrons +3 ion
Q.2.
Which of the following statements is correct about chlorine?
20%
Chlorine gas is poisonous
20%
Chlorine has six electrons in its outer energy level
28%
Chlorine's outer energy level is not full which means it is a reactive non-metal
32%
Chlorine forms a negative ion
Q.3.
Why is sodium a reactive metal?
11%
It has a low melting point
6%
It is silvery-grey in color
78%
It has one electron in its outer energy level (electron shell)
6%
It has seven electrons in its outer shell
Q.4.
When metals bond with non-metals what happens to their electrons?
30%
The metals lose electrons
22%
The metals gain electrons
30%
The metals share their electrons
17%
The metals keep the same number of electrons
Q.5.
46g of sodium react with how much oxygen to produce 110g of sodium oxide?
12%
23g
12%
46g
75%
64g
0%
110g
Q.6.
When sodium and chlorine react what happens to their electrons?
64%
One electron is transferred from the sodium to the chlorine
14%
One electron is transferred from the chlorine to the sodium
14%
The chlorine and the sodium share an electron
7%
Seven electrons are transferred from the chlorine to the sodium
Q.7.
Potassium is in the same group of the periodic table as sodium but lower down the group. This means what?
14%
Potassium is less popular
21%
Potassium has more electrons in its outer energy level
7%
Potassium will react more slowly
57%
Potassium will form ionic compounds with non-metals
Q.8.
Which sub-atomic particles are involved in chemical bonding?
6%
Neutrons
6%
Protons
56%
Electrons
31%
All af them
Q.9.
Which of the following reactions does not involve ionic bonding?
0%
sodium + chlorine → sodium chloride
50%
sulfur and oxygen → sulfur dioxide
14%
iron and oxygen → iron oxide
36%
zinc and nitric acid → zinc nitrate and water
Q.10.
What is the ionic bond between sodium and chlorine?
17%
A pair of shared electrons
25%
The nucleus of the sodium atom sticks to the chlorine
17%
Particles called gluons attach the two atoms to each other
42%
An electrostatic charge holds them together
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