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natima [27]
3 years ago
13

Which family in the periodic table has metals that are usually harder than other metals? Alkali metals Alkaline earth metals Lan

thanide series Transition metals
Chemistry
1 answer:
stealth61 [152]3 years ago
3 0

Answer:

The correct answer is "Alkaline earth metals".

Explanation:

Alkaline earth metals are a group of elements that are located in group 2 of the periodic table. They are harder than alkaline metals, have brightness and are good electrical conductors. Hardness is the degree of scratch resistance a material offers.

Have a nice day!

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0.0680 \times 25 = (59\times x + 13 \times 0.040) \\ \\ 1.7 = 59x + 0.52\\ \\ 1.7 - 0.52 = 59x \\ \\ 59x = 1.18

x = \dfrac{1.18}{59}

\mathbf{x =0.02 \ M }

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