Q. Mass of a proton is equal to that of mass of

View solution

Q. Subtracting proton number from nucleon number,

View solution

Q. Number of electrons in calcium are 20. outermost shall will have as many as

View solution

Q. Period number indicates the

View solution

Q. Helium (He) is not an inert gas because

View solution

Q. Carbon-12 is chosen as standard atom because

View solution

Q. Same number of shells are found in elements of

View solution

Q. If n=1, maximum number of electrons in a shell can be recalled through formulae

View solution

Q. If nucleon and neutron numbers are 27 and 14 respectively, number of electrons will be

View solution

Q. If nucleon number of fluorine is 19, proton number will be

View solution

Q. If nucleon and proton number of argon is 40 and 18 respectively, respective number of electrons and neutrons will be

View solution

Q. Nucleon number of an element is equal to the

View solution

Q. Full shell of valence electrons make

View solution

Q. Energy levels of electrons are also called as

View solution

Q. Inert gases have

View solution

Q. Proton number of Fluorine (F) is 9, electron number is

View solution

Q. In periodic table, number of valence electron is one, in

View solution

Q. Elements and their isotopes have different

View solution

Q. In tritium, number of neutrons is

View solution

Q. The number of times a p⁺ is heavier than an e⁻ is

View solution