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what does the atomic number show in the periodic table ?

atomic number shows the number of protonsand proton number = the number of electrons so the overall charge of an atom is neutral.
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Answered by Marwa A. • Chemistry tutor
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5 pencils cost 50p , how many would 2 pencils cost?

work out in parts / ratio firstly work out how much one pencil costs, 50p divide by 5 = 10p1 pencil = 10p therefore, 2 pencils = 10p x 2 = 20p
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Answered by Marwa A. • Maths tutor
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What does the half life of radioactive substance mean?

All radio active decay is random. In any radioactive substance each specific nucleus has a chance of decaying at one specific point in time. However we can't predict when this is going to happen. Instead we ...
Answered by • Physics tutor
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How can I make my personal statement stand out from the crowd?

A personal statement is an opportunity to tell a university exactly why you derserve a place on their course- as easy as this may sound, there will be thousands of other students attempting to do the exact s...
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How do I write a comparative essay?

The key to a comparative essay is to be consistent with your comparisons throughout. As with all essays, your theme and argument should be present from your introduction and run through to your conclusion. T...
Answered by • English tutor
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