An ion with mass number 56 contains 3 units of positive charge and '30.4 %' more neutrons than electrons. Assign the symbol to this ion.

An ion with mass number 37 possesses one unit of negative charge. If the ion contains '11.1 %' more neutrons than the electrons, find the symbol of the ion.

An element with mass number 81 contains '31.7 %' more neutrons as compared to protons. Assign the atomic symbol.

The mass number of an atom is 31. The M shell of this atom contains 5 electrons. How many neutrons does this atom have?

The number of electrons, protons and neutrons in a species are equal to 18, 16 and 16 respectively. Assign the proper symbol to the species.

The number of electrons, protons and neutrons in a species are equal to 18,16 and 16 respectively. Assign the proper symbol to the species.

The number of electrons, protons and neutrons in a species are equal to 18, 16 and 16 respectively. Assign the proper symbol to the species.

The number of electrons, protons and neutrons in a species are equal to 18, 16 and 16 res­pectively .Assign the proper symbol to the species.

True or false? . a) All particles in the atom have charge. b) Electron and proton haveopposite charges. So atom has no charge. c) Mass number is the total number of electron, proton and neutron. d) The number of neutrons are obtained on substracting atomic number from mass number.

Assertion: Among isoelectronic species, the cation with the greater positive charge will have a smaller radius. Reason :Greater is the attraction of the electrons to the nucleus, smaller is the size of atom/ion.