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marusya05 [52]
4 years ago
5

Electron configuration for be+2

Chemistry
1 answer:
svlad2 [7]4 years ago
6 0

Answer:

atomic number of Be =4

electronic configuration :1s²2s²

but for Be2+ atomic number = 4-2 =2

electronic configuration : 1s²

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Step 1: Data given

Mass of NaCl = 100.0 grams

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Step 2: Calculate the dissolved mass of NaCl

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Moles NaCl = 0.693 moles

Step 4: Calculate molarity

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Molarity dissolved NaCl = 0.693 moles / 0.1 L

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