Which scientist discovered that atomic number is the fundamental property of an element?
Bragg
Proust
Hund
Moseley
Group 18 elements are called?
Alkali metals
Halogens
Transition metals
Noble gases
The vertical columns in the modern periodic table is called?
Groups
Periods
Line
Class
Identify metals from the following?
Silicon
Tin
Chlorine
Germanium
Group 1 and 2 elements are called
d - block elements
p - block elements
s - block elements
f - block elements
Lanthamides and actinides are called
Lead
Iodines
Boron
The law used by Newlands to arrange elements is known as?
Law of triads
Mesdeleev's Law
Modern Periodic Law
Law of octaves
The number of periods in modern periodic table?
12
8
7
14
Atomic radius of sodium in picometre is ?
99
132
143
190
