If a neutral chlorine atom has 17 electrons, how many protons does it have?A) 2 B) 17 C) 34 D) 18

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samhouston's profile pic

samhouston | Middle School Teacher | (Level 1) Associate Educator

Posted on

B) 17

 

Note - if an atom is neutral, the number of protons equals the number of electrons.

lshenkman's profile pic

lshenkman | Student | (Level 1) Honors

Posted on

B) 17

Protons have a positive charge while electrons have a negative charge. In order to form a neutral (no charge) atom there must be the same number of protons as electrons.

Therefore there are 17 protons since there are 17 electrons. Both cancel each other out since 17+ -17= 0

kathijadane's profile pic

kathijadane | Student, Grade 10 | (Level 1) Honors

Posted on

In an atom the number of protones are equal to the number of electrons. therefore that atom will be neutral in charge.

So, a neutrally charged clorine atom is having 17 electrons & 17 protons.

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