The greatest credit for producing chemistry's most famous organization of elements is always given to:
Dobereiner
Moseley
New lands
Mendeleev
The first period consists of:
8 elements
2 elements
16 elements
32 elements
Transition elements are:
D-block
P-block
S-block
F- block
Ionization energy is high for:
Group I
Group O
Group IV
Group V
Group O elements are:
Halogens
Alkali metals
Alkaline earth metals
Noble gases
Group I and II elements are called:
D- block
S - block
F - block
Mendeleev arranged the elements in the order of increasing:
atomic number
atomic mass
molecular mass
molar volume
The electrical conductivity of which of the following elements are very high?
Transition metals
Inner transition metals
The law suggested by New land to arrange elements is known as:
Law of triads
Mendeleev's law
Modern periodic law
Law of octaves
Ekaboron in Mendeleev's label was later discovered and is called:
Gallium
Silicon
Scandium
Indium