Chemistry, 03.02.2021 22:20 firdausmohammed80
How does the number of valence electrons change for atoms as you move in order from element 1, Hydrogen (M), to element 18, Argon (An), on the periodic table?
The number of valence electrons only increases
The number of valence electrons decreases across the period and then increases at the beginning of the next energy level
The number of valence electrons increases across the period and then decreases at the beginning of the nen energy level
The number of valence electrons only decreases
Answers: 2
Chemistry, 22.06.2019 22:10
Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water
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What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water
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What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.
Answers: 3
Chemistry, 23.06.2019 11:00
Acompound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen by mass how many grams of c and h?
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How does the number of valence electrons change for atoms as you move in order from element 1, Hydro...
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