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abhijit_sinha
Newbie
Posts: 1
Joined: Wed Jul 21, 2010 7:40 am

question

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?
expert
Distinguished Member
Posts: 1624
Joined: Sun Feb 22, 2009 8:08 pm
Here is an easy guide for you: http://education.jlab.org/qa/pen_number.html
Remember safety first! Check MSDS and consult with professionals before performing risky experiments.
Warner Mortensen
Full Member
Posts: 19
Joined: Mon Jul 26, 2021 4:13 am

Re: question

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)
ChenBeier
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Joined: Wed Sep 27, 2017 7:25 am
Location: Berlin, Germany

Re: question

Please dont answer 11 years old questions.
Warner Mortensen
Full Member
Posts: 19
Joined: Mon Jul 26, 2021 4:13 am

Ok my bad!