The correct answer is option B. Alpha radiation is identical in mass and charge to a helium nucleus. Alpha particle contains two protons and neutrons. It is the same as giving out a doubly-ionized helium atoms.
Answer:
When excited electrons fall to lower energy levels, they can release energy in the form of light. metal ions in the salts used in the flame tests.
Answer:
7.0*10-11m or 70Å
Explanation:
From Bragg's equation, w=2dsinx/n
Since all the parameters are specified in the question, we can easily go ahead to obtain the wavelength but we must convert the spacing given in angstroms to meters using the conversion factor provided as shown in the solution below:
Answer:
solid, liquid
Explanation:
solid liquid and gas are the three most common states of matter, my best guessstimation is that solid is the ¨normal form¨ with you having to then heat it up to get to gas or, change it to liquid... even though most of the earth is liquid soo it could also be liquid try your best and think it over
I think the answer you are looking for is D.
Hope this helps!!! :D