Strontium (Sr). Elements in the same group of the periodic table have similar characteristics.
Answer:
That unknown substance is water
Explanation:
An electron can be added to halogen atom to force a halide ion with 8 valence electrons
<h3>What is an atom?</h3>
An atom can be defined as the smallest part of an element which can take part in a chemical reaction.
However whenever, an electron is added to halogen atom to force a halide ion with 8 different valence electrons
So therefore; an electron can be added to halogen atom to force a halide ion with 8 valence electrons
Learn more about halogens:
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Yes it is used , hope this helps
The answer is: [D]: a reactant.
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