There are four atoms A,B, C and D with atomic numbers 9,11,13 and 15 respectively. The atom containing less than 8 electrons in the second or L - shell is1) A2) B3) C4) D
What determines the number of positive charge in the nucleus1) No. of electrons removed2) Ratio of protons to neutrons3) The number of protons4) The electropositive character of the atom
The fundatmental particles present in a neutral atom which are equal is number are1) Positron and electrons2) Proton and electron3) Neutrino and electron4) Proton and neutron