Answer:
the wavelength of radiation emitted is 
Explanation:
The energy of the Bohr's hydrogen atom can be expressed with the formula:
For n = 7:
For n = 4
The electron goes from the n = 7 to the n = 4, then :
Wavelength of the radiation emitted:
where;
hc = 1242 eV.nm
Answer:
im gunna save my answer so no one can take it:)
Explanation:
I tried my best
francium , in the Periodic table the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. making helium is the smallest element, and francium the largest.
Answer:
126.4 g of 
are required
Explanation:
Balanced reaction: 
According to balanced reaction-
8 moles of 
are produced from 2 moles of
So, 8.70 moles of are produced from 
moles of or 2.175 moles of
Molar mass of = 58.12 g/mol
So, mass of required = 
= 126.4 g
Hence 126.4 g of are required
Answer:
It is considered life, but that doesn’t have to do much with abortion.
We kill things all the time. Unless you are vegetarian, lots of animals are killed to give you meat. Even if you are, you’ll probably swat a mosquito that’s trying to bite you. And what about the bacteria inside your body that are constantly killed to keep you healthy?
The question is how much this life is worth. This becomes more a question of ethics, but I think we can all agree a human life is worth a lot. So killing humans is wrong. What about somewhat intelligent animals? Well, killing them just for the fun of it or because you can is wrong as well I think.Most people think that’s okay, although some people will disagree and become vegetarians.
Insect life is worth less, and killing an insect is seen by most people as okay as long as you have even a small reason for it (like being irritated by a buzzing fly).
And all the way on the bottom are bacteria. They are not conscious, even though alive.
Sorry about the first answer. I didn't look at the question carefully since I wasn't wearing my glasses.
If this doesn't help than I'm sorry.
