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sertanlavr [38]
2 years ago
13

An atom of elements x has one more shell of electrons than an atom of beryllium,but h are s one less valence electron then beryl

lium.which element is element X?
Chemistry
1 answer:
Ilia_Sergeevich [38]2 years ago
5 0

Element X is sodium.

If there is one more shell of electrons, then this means it is one period below.

Since there is one less valence electron, it is one group to the left.

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What is a property of most metals?
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A cylinder of argon contains 50 L of Ar at 12.4 atm and 127°C . How many moles of argon are in the cylinder
joja [24]

Answer:

18.9 moles

Explanation:

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V = 50 L

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6 0
3 years ago
The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.085 M, how long would it take u
olasank [31]

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Explanation:

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Explanation:

Expression for rate law for first order kinetics is given by:

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a) for completion of half life:

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5 0
3 years ago
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6 0
3 years ago
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