Question

2
An atom has is electron, Find the number of
protons and name the element.
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Answer 1

$\huge\bold\star\pink{Answer}$

Its nucleus also contains two neutrons. Since 2+2=4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons, since the number of electrons must equal the number of protons.

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Mass Number......☺

Answer 2

Answer:

since the number of electrons are equal to the number of protons,

no. of protons = 2

according to the atomic table, an element that has atomic number(no. of protons) 2 is helium.

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