What are the first 30 elements and their atomic numbers and symbols
The correct answer and explanation is:
Here are the first 30 elements, along with their atomic numbers and symbols:
- Hydrogen (H) – Atomic Number: 1
- Helium (He) – Atomic Number: 2
- Lithium (Li) – Atomic Number: 3
- Beryllium (Be) – Atomic Number: 4
- Boron (B) – Atomic Number: 5
- Carbon (C) – Atomic Number: 6
- Nitrogen (N) – Atomic Number: 7
- Oxygen (O) – Atomic Number: 8
- Fluorine (F) – Atomic Number: 9
- Neon (Ne) – Atomic Number: 10
- Sodium (Na) – Atomic Number: 11
- Magnesium (Mg) – Atomic Number: 12
- Aluminum (Al) – Atomic Number: 13
- Silicon (Si) – Atomic Number: 14
- Phosphorus (P) – Atomic Number: 15
- Sulfur (S) – Atomic Number: 16
- Chlorine (Cl) – Atomic Number: 17
- Argon (Ar) – Atomic Number: 18
- Potassium (K) – Atomic Number: 19
- Calcium (Ca) – Atomic Number: 20
- Scandium (Sc) – Atomic Number: 21
- Titanium (Ti) – Atomic Number: 22
- Vanadium (V) – Atomic Number: 23
- Chromium (Cr) – Atomic Number: 24
- Manganese (Mn) – Atomic Number: 25
- Iron (Fe) – Atomic Number: 26
- Cobalt (Co) – Atomic Number: 27
- Nickel (Ni) – Atomic Number: 28
- Copper (Cu) – Atomic Number: 29
- Zinc (Zn) – Atomic Number: 30
The periodic table arranges all elements based on their atomic numbers, which represent the number of protons in an atom’s nucleus. The elements in the first 30 positions span a wide range of characteristics. Elements 1 to 10 include gases like Hydrogen, Helium, and Oxygen, which are essential to life. Elements 11 to 18 start to show metallic properties, such as Sodium and Magnesium. From element 19 onward, the transition metals begin to appear, which are known for their ability to conduct electricity and heat, as well as for their malleability. For instance, Iron (Fe) and Copper (Cu) are widely used in various industrial applications due to their strength and conductivity. The increasing atomic number reflects an increasing complexity in both atomic structure and the element’s role in chemical reactions.