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strojnjashka [21]
3 years ago
9

Why is hydrogen (H) placed with the elements in Group 1A?

Chemistry
2 answers:
Alex787 [66]3 years ago
6 0
It has ns1 electron configuration like the alkali metals. 
NISA [10]3 years ago
6 0

The answer is -


It has the same number of valence electrons


If this helped please rate :)

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<span>use the freezing point depression formula for this one: delta T = i * m * K where K is a constant, m is the molality (mol solute/kg solvent), and i is the van'hoff factor the van hoff factor is the number of ions that your salt dissociates into. Since it's an ALKALI flouride salt, how many ions? k is just a constant, you get it from a table in your textbook somewhere So you have everything to solve for the molality of the solution, once you did that, multiplying it by the mass of water to find the mols of the salt. Take the mass of the salt and divide by this mols to figure out the molar mass, and then compare it with the periodic table to identify the salt.
</span>
<u>Mole solute</u>   x  mass of Water  = Mol solute<u>
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then 

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