Many chemical compounds have both common and systematic names. common names are historical and tend not to identify the elements that make up the compound. however, the systematic name allows for correct identification of the cations and anions that together make up the ionic compound.

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Many chemical compounds have both common and systematic names. common names are historical and tend not to identify the elements that make up the compound. however, the systematic name allows for correct identification of the cations and anions that together make up the ionic compound.

A ) What is the chemical forula for potassium permanganate?

B) What is the chemical formula of Copper (II) sulfate ?

C) Sodium carbonate is used in the manufacture of paper. What is the chemical formula for this compound?

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A) KMnO₄

B) CuSO₄

C) Na₂CO₃

kuchisake

kuchisake-onna (口裂け女, "slit mouth woman ") is a malevolent figure appearing in japanese ghost stories, possibly dating back to the edo period. she takes the form of a masked woman who approaches people and asks them if they believe she is pretty.

explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.