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3 years ago

In order for sodium to have 8 valence electrons it would need to either gain _ electrons or lose _ electron.

Chemistry

1 answer:

tensa zangetsu [6.8K]3 years ago

5 0

Answer:

Explanation:

sodium has 1 valence electron because of its place on the periodic table. a trick to use is included in the picture below to find out how many valence electrons an element has. to get from 1 to 8 we add 7.

I hope this helps :))

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What energy is needed to make evaporation happen

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3 years ago

d) A short ton of coal holds about 2.24 x 107 J of energy and costs about $56.45 per short ton. How many Joules of energy in the

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Answer:

396811.337 J

Explanation:

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3 years ago

If this decay has a half life of 2.60 years, what mass of 72.5 g of sodium 22 will remain after 15.6 years

Vlad1618 [11]

Sodium-22 remain : 1.13 g

<h3>Further explanation </h3>

The atomic nucleus can experience decay into 2 particles or more due to the instability of its atomic nucleus.

Usually, radioactive elements have an unstable atomic nucleus.

General formulas used in decay:

$\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{T/t\frac{1}{2} }}}$

T = duration of decay

t 1/2 = half-life

N₀ = the number of initial radioactive atoms

Nt = the number of radioactive atoms left after decaying during T time

half-life = t 1/2=2.6 years

T=15.6 years

No=72.5 g

$\tt Nt=72.5.\dfrac{1}{2}^{15.6/2.6}\\\\Nt=72.5.\dfrac{1}{2}^6\\\\Nt=1.13~g$

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3 years ago

In order for sodium to have 8 valence electrons it would need to either gain _____ electrons or lose _____ electron.

In order for sodium to have 8 valence electrons it would need to either gain _ electrons or lose _ electron.