Protons Neutrons Electrons

Radium is a classified alkaline earth metal and its symbol is ‘Ra’. Radium is the 88th element of the periodic table so its atomic number is 88. The atomic number of an…

Francium is a classified alkali metal and its symbol is ‘Fr’. Francium is the 87th element of the periodic table so its atomic number is 87. The atomic number of an element…

Radon is a classified noble gas and its symbol is ‘Rn’. Radon is the 86th element of the periodic table so its atomic number is 86. The atomic number of an element…

Astatine is a classified halogen element and its symbol is ‘At’. Astatine is the 85th element of the periodic table so its atomic number is 85. The atomic number of an element…

Polonium is a classified metalloid and its symbol is ‘Po’. Polonium is the 84th element of the periodic table so its atomic number is 84. The atomic number of an element is…

Bismuth is a classified post-transition metal and its symbol is ‘Bi’. Bismuth is the 83rd element of the periodic table so its atomic number is 83. The atomic number of an element…

Lead is a classified post-transition metal and its symbol is ‘Pb’. Lead is the 82nd element of the periodic table so its atomic number is 82. The atomic number of an element…

Thallium is a classified post-transition metal and its symbol is ‘Tl’. Thallium is the 81st element of the periodic table so its atomic number is 81. The atomic number of an element…

Mercury is a classified transition metal and its symbol is ‘Hg’. Mercury is the 80th element of the periodic table so its atomic number is 80. The atomic number of an element…

Gold is a classified transition metal and its symbol is ‘Au’. Gold is the 79th element of the periodic table so its atomic number is 79. The atomic number of an element…

Platinum is a classified transition metal and its symbol is ‘Pt’. Platinum is the 78th element of the periodic table so its atomic number is 78. The atomic number of an element…

Iridium is a classified transition metal and its symbol is ‘Ir’. Iridium is the 77th element of the periodic table so its atomic number is 77. The atomic number of an element…

Osmium is a classified transition metal and its symbol is ‘Os’. Osmium is the 76th element of the periodic table so its atomic number is 76. The atomic number of an element…

Rhenium is a classified transition metal and its symbol is ‘Re’. Rhenium is the 75th element of the periodic table so its atomic number is 75. The atomic number of an element…

Tungsten is a classified transition metal and its symbol is ‘W’. Tungsten is the 74th element of the periodic table so its atomic number is 74. The atomic number of an element…