Answer :
When moving from left to right across a period of the periodic table, the elements become less metallic.
Metallic luster, a bright appearance, high density, high thermal conductivity, and high electrical conductivity are physical characteristics connected to metallic character. The majority of metals are ductile and malleable, allowing for deformation without breaking. There are many thick and hard metals.
Metallic properties in the periodic table grow down groups and diminish from left to right across periods. Metal reactivity increases down groups and declines across periods from left to right. Indicators of nonmetallic properties rise from left to right and fall down groupings.
As an element's propensity to lose electrons declines, its metallic nature also lowers. Additionally, travelling from left to right in the periodic table increases the non-metallic character since an element's propensity to receive electrons increases with an increase in effective nuclear charge.
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