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balu736 [363]
3 years ago
11

Vrite skeleton equations for the following word equations.

Chemistry
2 answers:
almond37 [142]3 years ago
4 0

Answer:

g

Explanation:

g

Bad White [126]3 years ago
3 0
H + Br -> HBr
Criss cross the charges because hydrogen bromide is ionic
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Use the periodic table to determine the electron configuration for Ca and Pm in noble-gas notation Ca: [Ar]4s2 [Ar]4s1 [Ar]3s2 [
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1) Ca: [Ar]4s²
2) Pm: [Xe]6s²4f⁵

Explanation:

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Its atomic number is 20. So it has 20 protons and 20 electrons.

Since it is in the row (period) 4 the noble gas before it is Ar, and the electron configuration is that of Argon whose atomic number is 18.

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2) Pm

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The atomic number of Xe is 54.

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