(i) Draw the atomic structures of the following elements: Magnesium, silicon, sulphur. (ii) What is the atomic number and mass number of the element whose atomic structure is shown in below?

Question

Philoid · Accepted Answer

(i) Magnesium: Symbol = Mg

Atomic number = 12

Protons = 12

Electrons = 12

Electronic configuration = 2, 8, 2

Atomic structure:

Silicon: Symbol = Si

Atomic number = 14

Protons = 14

Electrons = 14

Electronic configuration = 2, 8, 4

Atomic structure:

Sulphur: Symbol = S

Atomic number = 16

Protons = 16

Electrons = 16

Electronic configuration = 2, 8, 6

Atomic structure:

(ii)

Atomic number that can be determined from the atomic structure is 13

Mass number is 13 + 14 = 27

(i) Draw the atomic structures of the following elements: Magnesium, silicon, sulphur.(ii) What is the atomic number and mass number of the element whose atomic structure is shown in below?

(i) Draw the atomic structures of the following elements: Magnesium, silicon, sulphur.
(ii) What is the atomic number and mass number of the element whose atomic structure is shown in below?