Define atomic number.

Complex in which effective atomic number is not equal to atomic number of the noble gas

Define isotopic number. Calculate the isotopic numbers of hydrogen-3 and chlorine-37

Decrease in atomic number is observed during :

Define atomic mass number.

Define atomic radius.

An atom has a mass number of 23 and atomic number 11. The number of protons are ______

If number of electrons in an atom is 8 and number of protons is also 8, then i) what is the atomic number of atom ? Ii) what is the charge on the atom?