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question

Posted: Wed Jul 21, 2010 8:38 am
by abhijit_sinha
If 2 protons and 2 neutrons are added to an atom 234X90 another atom Y is formed. Write down the resultant atom Y indicating its atomic number. How many neutrons does it possess?

Posted: Wed Jul 21, 2010 2:07 pm
by expert
Here is an easy guide for you: http://education.jlab.org/qa/pen_number.html

Re: question

Posted: Sat Oct 23, 2021 5:30 am
by Warner Mortensen
The atomic number may be found at the upper left corner, while the atomic weight can be found at the bottom.
Atomic number = number of protons.
Atoms have no overall electrical charge by definition. This means that the positively charged protons and negatively charged electrons must be in equilibrium.
no of protons = no of electrons.
An atom can absorb or lose electrons, transforming into an ion. An ion is nothing more than an atom that has been electrically charged. Adding or subtracting electrons from an atom has no effect on the element's identity, just on its net charge.The atomic weight is a measure of the total number of particles in the nucleus of an atom. In fact, it's not that simple. In comparison to the mass of carbon-12, the atomic weight is a weighted average of all naturally occurring isotopes of an element. Find mass number using
Mass Number = (Number of Protons) + (Number of Neutrons)

Re: question

Posted: Sat Oct 23, 2021 6:04 am
by ChenBeier
Please dont answer 11 years old questions.

Re: question

Posted: Sat Oct 23, 2021 7:48 am
by Warner Mortensen
Ok my bad!