Elements vary regularly with ………………..
a) formula mass
b) atomic number
c) atomic mass
d) none of these
Properties of elements depends upon…..……
a) arrangement of electrons
b) atomic number
c) a & b both
d) atomic mass
Modern Periodic Table:
The modern periodic table was put forward by
a) J.W.Dobereiner
b) Lavoisier
c) Lother Meyer
d) Moseley
Explanation:Moseley revised the periodic table and made a bold change that removed
all inconsistencies. He suggested that instead of arranging elements in the
ascending order of their atomic masses, they should be arranged in the
ascending order of their atomic numbers
Henry Moseley was ………
a) physicist
b) teacher
c) dentist
d) none of these
Henry Moseley was ……… physicist.
a) German
b) English
c) Russian
d) Italian
