Question

Define metallic character.
(A) An atom is said to be a metal if it loses one or more electrons when supplied with energy.
(B) An atom is said to be a metal if it loses only one electron when supplied with energy.
(C) An atom is said to be a metal if it gains one or more electrons when supplied with energy.
(D) An atom is said to be a metal if it gains only one electron when supplied with energy

Answer 1

Metallic character of a metal can be defined as the ability of an element to lose electrons. More electrons lose, more will be its metallic character.

Complete step by step answer:
As we know, metals are lustrous, opaque elements that are good conductors of heat and electricity of heat and electricity most of the metals are malleable and ductile. In chemistry, metals are defined as the element that readily forms positive ions (cation) and has metallic bonds. Metals generally have low ionisation enthalpy. The vast majority of metal are found in ores but a few metals such as copper gold, platinum and silver frequently occur in the free state because they do not readily react with other elements. Since ionisation enthalpy of metals are low, they will easily lose electrons and lead to the formation of cation. Hence metallic character is defined as the level of reactivity of metals. An atom is said to be a metal if it loses one or more electrons when supplied with energy.

So, the correct answer is Option A.

Additional Information:
Additional information: metals as a chemical element comprise $25\%$ of Earth's crust and are present and used in many aspects of modern life.
The strength of some metals has to their frequent use for e.g.; in buildings bridges, towers, ships, vehicles, tools, pipes, railroad tracks etc.

Note:
Metallic character can also be defined on other basis such valence bonds. The above is a simplified explanation of metals. Other factors may. Include atomic radius, nuclear charge, crystal form etc.