2 years ago

I need help with question 2

Chemistry

1 answer:

krek1111 [17]2 years ago

8 0

Answer:

here's the answer to your question

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How many atoms are there in 5.70 mol of Mg

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6.0223 x 10^23 atoms

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Which of the following sets are isoelectronic (i.e., have the same number of electrons)? i. Br-, Kr, Sr2+ ii. C, N-, O2- iii. Mg

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Answer:

ii. $C,\ N^-,\ O^{2-}$

Explanation:

Isoelectric species are the species which have same number of electrons.

From the given options:-

$C,\ N^-,\ O^{2-}$ are the isoelectric species.

All the three species have same number of electrons which is equal to 6.

Carbon has 6 electrons.

$N^-$ has 6 electrons.

$O^{2-}$ has 6 electrons.

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Answer:

Letters

Explanation:

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What is an orderly, three dimensional arrangement formed by ions called?

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