3 years ago

The nucleus of an isotope of sulfur contains 34 neutrons. what is the atomic number of this isotope?

1 answer:

8 0

The atomic number of an element never changes no matter how many neutrons they have so Sulfur would just have an atomic number of 16 like normal.

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Formula for Ni2+ and NO3

lyudmila [28]

The formula of a compound is $Ni(NO_3)_2$

Given:

The ions $Ni^{2+}$ and $NO_3^-$

To find:

The formula for ions $Ni^{2+}$ and $NO_3^-$

Solution:

The ion with a positive charge (cation) = nickel ion = $Ni^{2+}$

The ion with a negative charge (anion) = nitrate ion = $NO_3^-$

Valency on nickel ion = 2

Valency on nitrate ion = 1

Using the criss-cross method as shown in image

The formula of a compound : $Ni(NO_3)_2$

The name of a compound is nickel(II) nitrate

$Ni^{2+}+2NO_3^-\rightarrow Ni(NO_3)_2$

The formula of a compound is $Ni(NO_3)_2$

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Explanation:

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