Periodic Table First Element Identification
The periodic table organizes chemical elements based on their atomic number, electron configuration, and recurring chemical properties. It starts with the element having the lowest atomic number.
Identifying the First Element
The atomic number of an element is determined by the number of protons in its nucleus. The element with the smallest atomic number is considered the first element in the periodic table.
Hydrogen (symbol H) has an atomic number of 1, meaning its nucleus contains one proton.
Conclusion
Based on its atomic number of 1, Hydrogen is recognized as the first element on the periodic table.
Similar Questions
- Which scientist invented the Periodic table?
- The current Secretary General of United Nations Antonio Guterres belongs to:
- What element is a greenish yellow gas with a characteristic smell at room temperature?
- In the periodic table, as one goes down the group, which property doesn't change?
- Which of the following is a copper ore?
- Four words have been given, out of which three are alike in some manner and one is different. Select the odd one.
- The elements that have intermediate properties between those of metals and non-metals are called metalloids. Which among the following is known as a metalloid?
- What is the densest substance on Earth?
- The Law of Octaves' was proposed by:
- Which of the following is a property of metalloids?
Important Questions from Classification of Elements and Periodicity in Properties
- Which one of the following is the correct order of the valencies of elements Ne, Si, N and Mg?
The elements of the groups 3 to 12 are called _______ elements or transition elements.
How many electrons are there in the outermost shell of a group 16 element?
Which of the following is known as alkaline earth metal?
What is the chemical symbol of magnesium?
