Question

give the atomic number, mass number, and number of neutrons for 2He⁴, 5B¹¹, 15P³¹,12Mg³⁴. draw their respective atomic structure .​

Answer 1

He (Helium)

atomic number: 2

mass number: 4

number of neutrons: 2 (atomic number - mass number; 4-2)

B (Boron)

atomic number: 5

mass number: 11

number of neutrons: 6

P (Phosphorus)

atomic number: 15

mass number: 31

number of neutrons: 16

Mg (Magnesium)

atomic number: 12

mass number: 34

number of neutrons: 22

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