Which is used in pencils​

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Explanation:

Lead pencils contain graphite (a form of carbon), not lead. In fact, contrary to what many people believe, lead pencils never were made with lead. The ancient Romans used a writing device called a stylus. This was similar to the modern stylus used with smartphones and tablets, except it was bigger and made from lead.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

just did the assignment and the answer was #1 +2 n