Question

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Answer 1

Ans a) Na

Ans b) 11 protons

Ans c) 11 electrons

Ans d) 12 neurtons

Ans e) Na + Cl = NaCl

And f i) 11 number of proton

Ans f ii) 10 number of electron

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Answer 2

Answer:

a) Symbol of sodium = Na

b) Each sodium atom has 11 protons.

c) Each sodium atom has 11 electrons.

d) We will need atomic mass of sodium along with the atomic number in order to find neutrons.

e) Now, sodium atom lost an electron in a chemical reaction. So, the number of proton would be 11, and electron will reduce to 10. Hence, symbol of it's ion = Na+

f) Number of protons in sodium ion = 11

Number of electrons in sodium ion = 10

More information :-

→ The symbol Na is taken from Natrium, which is origin from German.

→ Mass number of Sodium is 23 u. Number of neutrons = 12.