The atoms of element
differ from each other based on the number of protons or electrons they have.
The number of protons or electrons is called the atomic number of an element
which serves as its original identity.
<span>Now, an isotope of an
element differs in their number of neutrons but the number of protons or
electrons are similar.</span>
Answer:
2C3H18 + 15O2 ---->6CO2 +18H2O
Explanation:
the number of reactant must be equal to the number of product.
Answer:
A. They must be kept separate from moisture and oxygen
Explanation:
Alkali metals refers to a group of chemical elements in the periodic table. It is the common name given to Group 1 elements (excluding hydrogen). They are generally metallic in nature with physical properties like shining lustre, silvery in appearance etc. Alkali metals include lithium, Pottasium, Sodium, Rubidium etc.
One important chemical property of alkali metals is their high reactivity i.e. they tend to react quickly with other substances. For example, alkali metals react vigorously with water to form hydroxides. They also react with oxygen to form oxides. Due to this highly reactive properties, they are kept or stored away from moisture (water) and oxygen (present in air).