How to evaluate mass number, Chemistry

Assignment Help:

Q. How to evaluate mass number?

An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus.

Mass number   =  number of protons    + number of neutrons

When texting the symbol for an isotope write the atomic number and mass number as shown in the following examples.

H atom with one proton and no electrons            H atom with one proton and one neutron

1980_How to evaluate mass number.png


Related Discussions:- How to evaluate mass number

Substances has giant covalent structure, This of the following substances h...

This of the following substances has giant covalent structure: (1) Iodine crystal                               (2) Solid  co 2   (3) Silica (4)  White phosphorus A

Surface tension, surface tension assingnment with diagram

surface tension assingnment with diagram

Regenerated by heating, Desiccants (drying agents) can often be regenerated...

Desiccants (drying agents) can often be regenerated by heating.  A desiccant that is commonly regenerated is CaSO 4 ?2H 2 O:

Electrolysis, In electrochemical series moving down the table the ease of ...

In electrochemical series moving down the table the ease of discharge at cathode increases.why? And what is ease of discharge

What are hormones, What are hormones? State the function of the following h...

What are hormones? State the function of the following hormones: (a) Testosterone (b) Oxytocin

Dalton''s law of partial pressures, can you give me a sample problem of tha...

can you give me a sample problem of that topic and the answer step by step

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd