Isotopes having 7 neutrons: hudrogen-7, helium-9, lithium-10, beryllium-11, boron-12 and many others.
An element with 7 valence electrons is likely in Group 17 of the periodic table, such as chlorine. With 74 neutrons, it corresponds to the isotope chlorine-81.
The periodic table has 7 periods on it.
Element 7 on the periodic table is Nitrogen (N). It is a non-metal element with an atomic number of 7 and is found in the atmosphere as a diatomic gas.
periodic table is classified into groups and periods.There are 18 groups and 7 periods in periodic table.
The element in period 4, group 7 of the periodic table is Manganese (Mn).
The seventh most abundent element is potassium.
7
Element
Nitrogen
No. Atomic hydrogen has one proton and one electron.
The periodic table of Mendeleev has 18 groups and 7 periods.
Nitrogen.