Question

2. For

Mass number -

Atomic number-

Na

Sodium

22.989 7492

-Symbol of the element

Atomic mass

how many protons the atom has? How many neutrons? How many electrons?

Answer 1

Na

Protons = 11

Electrons = ( protons = electrons )

= ( 11 = 11 )

= 11

Neutrons = ( Mass index - protons )

= ( 23 - 11 )

= 12

Step-by-step explanation:

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