Hydrogen (duterium).
Silicon
1H3 and 2He4
No, carbon is not the first element on the periodic table of elements. Hydrogen is the first element on the periodic table.
Each element on the periodic table has a specific number of neutrons and will vary for its isotope.
Electrons, protons, neutrons
who introduced the first Periodic Table
NO!!! Carbon is No. 6 in the Periodic Table. Hydrogen is No. 1 in the Periodic Table.
The first element of the Mendeleev's periodic table is hydrogen (H).
The first element in the periodic table of Mendeleev is hydrogen, not carbon.
Hydrogen is the first element on periodic table. Its atomic number is 1.
A bunch of them can have 74 neutrons, this is because there are isotopes in the world.
YES!!! The atomic No. is the postition of the element in the periodic table. It also indicates the number of protons in the element and electrons in the neutral element. The Atomic Mass is also included in the periodic table. The Atomic Mass is the sum of all the protons and neutrons of an element in the periodic table. Here are some examples. Hydrogen ; [1/1]H The first element in the table Carbon ; [12/6]C The sixth element in the periodic table Oxygen ; [16/8]O The eighth element in the periodic table et.seq., The first number given is the Atomic Mass and the second number is the Atomic Number.