Non-metals usually form _________________ oxides?
A. Acidic B. Amphoteric C. Neutral D. All of the above
Chemistry MCQs
Best position of hydrogen in the periodic table is above I.A Group which is mainly due to_______________?
A. Both are electropositive B. Similar outer most shell electronic configuration C. Both form ionic compounds D. All
Which one of the following sets consists of all coinage metals ?
A. Cu Hg Au B. Cu Ag Au C. Ag Au Hg D. Cu Fe Au
Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ?
A. The nature of its oxides B. The charge on its ions C. The formula of its oxide D. Its number of isotopes
The atomic radii decreases by increasing atomic number in________________?
A. Alkali metal B. Alkaline earth metal C. Elements from Li to Ne D. Halogens
An element has electronic conviguration 1s2 2s2 2p2. It belongs to__________________?
A. Group II-A B. Group IV-A C. Group VII-A D. Group VI-A
Which of the following ion is stable in aqueous solution ?
A. H+ B. H- C. Cl- D. All are stable
The atoms of same element having same atomic number but different mass number are called____________________?
A. Isobars B. Isomers C. Isotopes D. Isotropes
Shielding effect across the period_________________?
A. Increases B. Decreases C. Can not be predicted D. Remains constant
Higher value of electron affinity means__________________?
A. Atom will lose electron easily B. Atom will gain electron easily C. Atom may form di-positive ion D. The reason is unknown