Question

Write the symbol of noble gas element having atomic number 10 and 18
respectively​

Answer 1

Answer:

SYMBOL OF ELEMENT WITH ATOMIC NUMBER 10 : Ne  (Neon)

SYMBOL OF ELEMENT WITH ATOMIC NUMBER 18 : Ar  (Argon)

Answer 2

The symbol of a noble gas element having the atomic number in question is given below:

• An atomic number is given to an element according to the number of electrons and protons a particular atom contains.
• Noble gases are elements which have electrons completely filled in the outer shells.

1. Atomic number 10 = This element is Neon.

• Symbol of element= Ne

• This element contains 10 electrons out of which 2 in the inner shell and 8 in the outermost shell.

2. Atomic number 18 = The element is Argon.

• Symbol of element = Ar
• The element has three shells and contains 18 electrons. The outermost shell contains 8 electrons.
• Hence, a symbol of noble gases with atomic numbers 10 and 18 is Ne and Ar respectively.