Question

Why are Sodium, Potassium called as metals? What is the charge of an atom?Why are noble gases chemically stable​

Answer 1

Answer:

The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids). Sodium and potassium are the sixth and seventh most abundant of the elements, constituting, respectively, 2.6 and 2.4 percent of Earth's crust.

An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral

The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.

Explanation:

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Answer 2

Answer:

1. Sodium and potassium are called alkali alkali metals when they react with water save form alkalis like that of sodium hydroxide and potassium hydroxide.
2. an atom is electrically neutral as the electrons which has negative charge surrounded by the positive charge ocean.
3. noble gases are chemically stable because they have the most valency and Valence Electrons.