actinium is the first element on the periodic table.
the first element on the periodic table is?
actinium
hydrogen is found in the first group and first period in the periodic table, i.e. it is the first element on the periodic table, making it the lightest element. since hydrogen gas is so light, it rises in the atmosphere and is therefore rarely found in its pure form, h. in a flame of pure hydrogen gas, burning in air, the hydrogen (h) reacts with oxygen (o) to form water (ho) and releases energy.
hydrogen fuel
list of periodic table-related articles





























section::::list of articles related to periodic table.





























bullet::::- periodic table





























bullet::::- extended periodic table





























bullet::::- extended periodic table (large version)





























bullet::::- alternative periodic tables





























bullet::::- periodic table (electron configurations)





























bullet::::- periodic table (metals and non-metals)





























bullet::::- periodic table (crystal structure)





























bullet::::- periods





























bullet::::- period 1, period 2, period 3, period 4, period 5, period 6, period 7, period 8





























bullet::::- blocks





























bullet::::- s-block, p-block, d-block, f-block, g-block





























bullet::::- groups
list of periodic table-related articles