Hurr identify groups and sections of the periodic table by group name and common properties.

Elements of section s: are those elements whose valence shells are s¹ or s².

This section includes group 1 and 2.

Group 1: Alkalyne metals (Li, Na, K, Rb, Cs, Fr): react violently with water.

Group 2. Alkalyne earth metals (Be, Mg, Ca, Sr, Ba, Ra: react less violently with water.

Elements of both group 1 and group 2 shine, are conductive and are malleable and ductile.

Elements of section p: are those elements whose valence shells are p¹, or p², or p³, or p⁴, or p⁵, or p⁶.

This section includes the groups 13, 14, 15, 16, 17 and 18.

Most of those elements and non-metals except for B, Si, Ge, As, Sb, Te and Po which are metalloids (they have some characteristics of metals and some characteristics of non-metal).

Non metals are brittle and poor conductive.

Elements of section d is the biggest group. These are transition metals. In this group the electrons fill the type d orbitals.

This section includes groups 3 through 12.

The properties of these elements are those of metals: high conductivitiy, mallability and electrical conductivity.

Elements of section f are other transition metals (inner transition metals). They partially fill some f orbitals.

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Ibelieve the answer is d