Question

54. Fill in the following blanks in respect of an atom of an element :
No. of
Atomic No. of
Mass number
neutrons
number
protons
electrons
No. of
Symbol
11
12
...​

Answer 1

Answer:

atomic no 11 sodium..Na

atomic no 12 potesiam..K

Na(11) mass number.. 22. ( aal elements approximately double mass number)

k(13) mass number..26

Na no of electron 1

k No of electron 3