Question

2. Nahas 12 neutrons and 10 electrons. Which of the following statement is correct?
a. Na+ has atomic number equal to 10 and mass number 23
b. Na+ has atomic number equal to 11 and mass number 23
c. Na+ has atomic number equal to 11 and mass number 22
d. Nat has atomic number equal to 10 and mass number 22​

Answer 1

Answer:

a option is the answer for your question

Answer 2

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number of protons= atomic number= 11

number of protons and neutrons= 11+12=23

=> (option b )Na+ has atomic number equal to 11 and mass number 23

is correct