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3 years ago

An atom has the following electron configuration.

Chemistry

2 answers:

saul85 [17]3 years ago

8 0

Answer:

vanadium has 5 valence electrons

Explanation:

The element with electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d3

has 23 electrons. This element is Vanadium.

For Vanadium, the atomic number is 23 and the electronic configuration given is

1s2 2s2 2p6 3s2 3p6 4s2 3d3

Vanadium's ground state electron configuration is [Ar] 3d3 4s2.

Thus vanadium has 5 valence electrons and during ionic bonding, s-shell electrons are lost first and than d-shell electrons would be lost.

Wewaii [24]3 years ago

3 0

Answer: 5

Explanation: add up all the electrons and it will amount to 23. Arranging by the old model for electronic configuration, we have : 2, 8, 8, 5

The last number being 5 represent its valence electron

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creativ13 [48]

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3 years ago

How many moles are in 4.24kg of Na2CO3?

frosja888 [35]

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3 years ago

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tatiyna

Answer:

The answer to your question is 64.02 g of H₂O

Explanation:

Data

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Mass of water = ?

Process

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125 g ------------------------- x

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3 years ago

A nuclear waste site. cesium-137 is a particularly dangerous by-product of nuclear reactors. it has a half-life of 30 years. it

hram777 [196]

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$m(t) = m_{0} e^{-kt}$
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