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Nana76 [90]
4 years ago
10

Which element will be more reactive - Mg (magnesium) OR Se (Selenium)? *

Chemistry
1 answer:
anygoal [31]4 years ago
5 0

Answer:

magnesium

Explanation:

magnesium is in Group 2, in the periodic table. this means that it has 2 valence electrons. the less valence electrons an element or atom has, the more reactive. Selenium has 6 valence electrons. as a result, Mg is more reactive

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Carbonate oxidation number
Svetllana [295]

Answer:

-2

Explanation:

carbonate oxifation number is -2

6 0
3 years ago
Please help me.<br><br>balance this equation <br><br>Al + 0(2) = Al0(3)
Gala2k [10]
What helps me to balance equations is to list the elements i have on each side of the equation, and use tally marks to see what I have and don't have. Then when I'm done balancing, I tally again to make sure everything matches up.
On the left side, you have 1 Al, and 2 O. On the right side, 1 Al and 3 O.
In order for the equation to balance, you need to place a 2 in front of the AlO on the right side. This would make the Al have 2 atoms and the O have six. On the left side, you need to place a 2 in front of the Al and a 3 in front of the O, making it six. Left side: 2 Al's 6 O's. Right side: 2 Al's and 6 O's. Matches!
4 0
3 years ago
The gain of electrons by an element or ion in a reaction is called __.
dsp73

Answer:

Reduction

Explanation:

took the test

5 0
3 years ago
Periodic Table Escape<br> Enter the correct 4 digit code (no spaces) *
11111nata11111 [884]

Answer:

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Explanation:

6 0
4 years ago
8.Which of the following is a base?
RSB [31]

Answer:

Explanation:

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4 0
3 years ago
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