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Chrome File Edit View History Bookmarks People Window Help MasteringChemistry: pre- Secure https://session.masteringchemistry.com/myct/itemView?offset next&ass; CHEM 111 General Chemistry I Spring 2017 pre-lecture ch1 Chapter 1 Algorithmic Question 30 e-Variable ulus...opy.pdf Chapter 1 Algorithmic Question 30 C++ Part A How many protons (p) and neutrons (n are in an atom of 50sr? 90 p, 38 n Engineering 38 p, 90 n oblem...ith C.pdf 38 p, 52 n O 52 p, 38 n Submit My Answers Give up opcornTime University Physics-pdf MacBS2

Explanation / Answer

no. of electrons in astatine 211 is 85.

neutron proton electron...protons are about 99.86% as massive as neutrons and electrons are 0.054% as massive as neutrons.

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