The first ionization energy of neon is higher than that of:
Chlorine
Helium
Fluorine
Bromine
Group I and II elements are called:
D- block
P-block
S - block
F - block
The greatest credit for producing chemistry's most famous organization of elements is always given to:
Dobereiner
Moseley
New lands
Mendeleev
Ekaboron in Mendeleev's label was later discovered and is called:
Gallium
Silicon
Scandium
Indium
The high boiling points of Carbon and Silicon in group IV is due to:
strong covalent bond
weak covalent bond
ionic bond
van der Waal's force of attraction
Ionization energy is high for:
Group I
Group O
Group IV
Group V
From top to bottom, atomic ratio:
increases.
decreases.
remain the same.
first increases then decreases.
Group II elements are also called:
Halogens
Noble gases
Alkali metals
Alkaline earth metals
Group O elements are:
The electrical conductivity of which of the following elements are very high?
Transition metals
Inner transition metals
