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I need help with question one & two
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5 votes
I need help with question one & two

I need help with question one & two-example-1
User BlueMark
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The atomic number above the element is the number of protons inside of it.
That’s number 1 so answer is 169.
Number 2 is H because in the description above it states it is highly reactive
User Bastianwegge
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