Q. Electron affinities which are always endothermic

View solution

Q. Successive electron (e⁻) affinities must be used when element forms an ion with more than one

View solution

Q. Energy change due to acceptance of one electron (e⁻) by gaseous non-metal atom is

View solution

Q. The atoms which have the same number of protons but different number of neutrons are called

View solution

Q. To determine the mass of another compound by comparing it with the mass of carbon-12 atoms is

View solution

Q. Mr is symbol given for relative

View solution

Q. A method which is used to find the amount of particular substance in a solution is called

View solution

Q. The sum of protons (p⁺) and neutrons (n⁰) in an atom is called its

View solution

Q. Elements of D-block are mainly

View solution

Q. The electronic configuration of chromium is

View solution

Q. Electrons occupy separate orbital within the same sub-shell to reduce

View solution

Q. Whenever there is no empty orbital is available within sub-shell, electrons are

View solution

Q. The specific arrangement of elements in periodic table shows

View solution

Q. The only element which have electronic configuration of 1s² is

View solution

Q. Cl has the electronic configuration of

View solution

Q. Lithium has electrons

View solution

Q. The movement of electrons in transition elements within d-orbital gives

View solution

Q. When electrons (e⁻) are removed from atom, positive ions are

View solution

Q. The removal of 7th electron from an element of Group VI of the periodic table needs three times more energy than

View solution

Q. The removal of electrons one by one from an atom by a specific sequence of ionization energies are termed as

View solution