Question

1 to 30 elements with symbols and atomic number and atomic mass

Answer 1

here is the answer

hope it will help you bro!!!

Answer 2

Answer:

The first 30 elements are Hydrogen, helium, lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminium, Silicon, Phosphorus, Sulphur, Chlorine, Argon, Potassium, Calcium, Scandium, Titanium, Vanadium, Chromium, Manganese, Iron , Cobalt, Nickel, Copper and Zinc

Explanation:

Atomic mass of an element:

• The average mass of an element's atoms, measured in atomic mass units (amu) or Daltons, D, is known as its atomic mass.
• By averaging the weights of all the element's isotopes, the atomic mass of the element can be found.

Atomic number:

• The quantity of protons in an atom's nucleus is known as the atomic number. The number of protons determines an element's identity.
• The atomic number indicates how many protons are present in the atom's nucleus. Regardless of the presence of neutrons, elements are classified according to the number of protons in their nuclei.
• Uncharged subatomic particles known as neutrons are stable when contained in an atomic nucleus.
• Except for hydrogen, all other elements' atoms have neutrons in the nucleus.

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