Respuesta :
The , calcium is on forming two bonds with two bromine atoms because it is a IIA group element.
What is periodic table?
All identified chemical elements are arranged in rows (referred to as periods) and columns (referred to as groups) according to increasing atomic number in the periodic table of chemical elements, also known as the periodic table.
What is bond?
In molecules, atoms are joined by chemical bonds. Atomic nuclei with positive charges interact with electrons with negative charges to form bonds (the positions of which in space are determined by quantum mechanics).
when an element reacts with two bromine atoms means ita valency is two.,i,e a metal can form two bonds.
So calcium is on forming two bonds with two bromine atoms because it is a IIA group element.
Na and Li are the IA group elements.so these two elements forming only one bond . i,e these are reacts with one bromine .
Al is 13th group element so it forms three bonds.
Carbon is a non-metal. it does not form ionic bond.
Therefore, calcium is on forming two bonds with two bromine atoms because it is a IIA group element.
Learn more about periodic table from the given link.
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