Which describes the polarity in a water molecule?

partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms
partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms
partial positive charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms
partial positive charge on the oxygen atom because it pulls electrons from the hydrogen atoms

The answer is B. on edge

Explanation:

B. partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms

b i think it’s a water wheel turning in a stream

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.

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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.