Question

solve this:

Answer 1

What is the number of protorn , electrons and neutorn in the above

Answer 2

12 protons, 12 neutrons and 10 electrons. Do you need to know how I got this result?

Answer 3

Yes

Answer 4

The top number tells you the amount of protons, and the bottom number is the amount of protons and neutrons.

if:
12+x=24
x=12 also.

In general, a nuclues has a net charger of 0 (and has equal amounts of protons and neutrons)
Now the element has an overall charge of 2+, that means it must have lost 2 negatively charged electrons in order to gain the 2+ charge.

Answer 5

but A/c to this way the number of protons should be 24

Answer 6

Errmm, Not sure. I just had a quick look at the fact that it was magnesium then looked at my periodic table. :s

Answer 7

Before answering the question, you are reminded to post the question to the right group. In this case, that is the Chemistry group : http://openstudy.com/study#/groups/Chemistry

For your question,


no. of protons = 12
Mass number = no. of protons + no. of neutrons
24 = 12 + no. of neutrons
no. of neutrons = 12

For a neutral Mg atom, no. of electrons = no. of protons = 12
Since it has a charge +2,
no. of electrons = 12 - 2 = 10