Hydrogen.
Scandium. Its atomic number is 21. It is the first d block element.
The atomic number of an Element refers to it's position in The Periodic Table. The first element (Hydrogen - H) has the atomic number 1. The second element (Helium - He) has the atomic number 2. The fifty-second element (Tellurium - Te) has the atomic number 52. And so on.
The first atomic number appeared on the periodic table in August 1982. The first atom of the element meitnerium had the atomic number 109. The isotope of element 109 has an atomic mass of 266.
The elements are listed in the order of how many atoms they have. For example, hydrogen is the first element on the periodic table. Hydrogen is the smallest element, and has one atom.
Hydrogen is the element having atomic number1 and comes first in the periodic table.
Scandium. Its atomic number is 21. It is the first d block element.
The first element is hydrogen.Its atomic no. is 1 and atomic mass is 1.008.
The element first used for fission in an atomic bomb is uranium.
Yes. On the Periodic Table, it's the first element listed due to the fact it has only one electron and one proton.
The atomic number of an Element refers to it's position in The Periodic Table. The first element (Hydrogen - H) has the atomic number 1. The second element (Helium - He) has the atomic number 2. The fifty-second element (Tellurium - Te) has the atomic number 52. And so on.
The elements are arranged in order of increasing atomic number in the Periodic Table. The rows are called periods and the columns are called groups.
NO!!! Hydrogen (H) is the first element on the Periodic Table. Reason Atomic No. = 1 Atomic mass( of protium) = 1 Carbon lies 6th position. Atomic No. = 6 Atomic mass = 12
The first atomic number appeared on the periodic table in August 1982. The first atom of the element meitnerium had the atomic number 109. The isotope of element 109 has an atomic mass of 266.
The elements are listed in the order of how many atoms they have. For example, hydrogen is the first element on the periodic table. Hydrogen is the smallest element, and has one atom.
Hydrogen is the element having atomic number1 and comes first in the periodic table.
Manganese is a metal element. Atomic number of it is 25.
Hydrogen is the first element on periodic table. Its atomic number is 1.