Keeping in view the size of atom which order is correct one ?
Keeg in view the size of atom which order is correct one ? A. Mg > SrB. Ba > Mg C. Lu > Ce D. C1 > I
Keeg in view the size of atom which order is correct one ? A. Mg > SrB. Ba > Mg C. Lu > Ce D. C1 > I
Iodine is solid due to_________________? A. Strong covalent bond B. Large value of dipole momentC. High polarizability D. Strong hydrogen bonding
Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________? A. Covalent halides B. Electronegative halidesC. Polymeric halides D. Polymeric hydrides
Oxidation state of an atom represents____________________? A. Number of electrons gained B. Number of electrons lostC. Apparent charge in compound D. Its vacancies
Metallic characters of alkali metals_____________________? A. Increase down the group B. Decrease down the group C. No regular trend D. Remain same
Addition of 2nd electron to a uni negative ion is always____________________? A. ExothermicB. Endothermic C. Data is insufficient D. Unpredictable
Ionization energy depends upon____________________? A. Nuclear charge B. Atomic size C. Shielding effectD. I.E depends upon all of the above and nature of orbital
Deuterium reacts with oxygen to form________________? A. Hard waterB. Heavy water C. Soft water D. Water gas
The property which increases upto group IV-A then decreases on wards_______________? A. Ionization energy B. Atomic radiiC. Melting & boiling points D. Atomic volume
Which discovery caused a revision in the periodic law as stated by Mendeleev ? A. Location of nucleus by RutherfordB. Atomic number by Moseley C. X-rays by Roentgen D. Natural radioactivity by Henry Bacquerel.