Atomic number on the basis of Modern periodic law as on the view of Henry Mosely
Atomic number and valence electrons.
colour of the elemrnt
Radium (Ra) # 88th element in the periodic table.
atomic mass
Semi-metals
H or Hydrogen is an element. If it's on a periodic table then it's an element
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Henry Moseley founded modern periodic table. He proved that atomic number is the fundamental property to arrange the elements.
No it's arrange by the atomic number and family element name...
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
colour of the elemrnt
Francium followed by cesium
The periodic table is arranged by the Atomic Number
Radium (Ra) # 88th element in the periodic table.
The periodic table used to be arranged by increasing atomic mass. Now, it is arranged by increasing atomic number (number of protons in an atom of element).
This is the number of protons.
This is the number of protons.
The element abbreviated with As on the periodic table is Arsenic