Answer:
The options are missing, so I will answer the question in a general manner.
This group of elements includes the alkali metals, alkaline earth metals, transition metals, basic metals, lanthanides and actinides. Depending on conditions, elements belonging to the metalloid group may behave like metals. So, if you want to know if an element is a metal, just found it in the periodic table.
When bonding with nonmetals in ionic compounds, they are converted into cations. When bonding together they make metallic compounds. When multiple metals bound they form alloys (these can include nonmetals too).
B) The Mesozoic
C) The Paleozoic
D) The Precambrian
It states the fact, which we now know, that electrons are responsible for the chemical bonding. According to this theory, valency is the number of electrons present in the outermost energy shell of the atom. This energy shell is called valency shell.
The electrons located in the valence shell of an atom are responsible for forming chemical bonds by sharing, donating or accepting electrons.
The parts of the atom responsible for chemical bonding are the electrons, which are located in the outermost shell of the atom, also known as the valence shell. These electrons can be shared, donated, or accepted to form chemical bonds with other atoms. For example, in a covalent bond, electrons are shared between atoms. In contrast, in an ionic bond, electrons are transferred from one atom to another, creating ions that are attracted to each other and form a bond.
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