Question

Using your knowledge of chemistry, comment on at least TWO (2) different elements in periodic table by comparing the properties and position of your chosen elements. Elaborate the differences.

Answer 1

To do:

Comment on at least TWO (2) different elements in periodic table by comparing the properties and position of your chosen elements.

Element 1:

$\boxed{ \bf{ \underline{Natrium \: \: (Sodium)}}}$

Position in Periodic Table:

• Period : 3
• Group : 1

Atomic number : 11

Atomic mass : 23

Stable isotope : ${Na}^{23}$

Electronic Configuration : [Ne] 3s¹

Van-der Waals radius $\approx$ 227 pm

Melting point = 98°C

Density = 0.97 g/cc

Oxidation State = +1 (highly basic oxide)

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Element 2:

$\boxed{ \bf{ \underline{Magnesium }}}$

Position in Periodic Table :

• Period : 3
• Group : 2

Atomic number : 12

Atomic mass : 24

Stable isotope : ${Mg}^{24}$

Electronic configuration : [Ne] 3s²

Van-der Waals radius $\approx$ 174 pm

Melting point = 650°C

Density = 1.75 g/cc

Oxidation state = +2 (moderately basic oxide)

Hope It Helps.