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KengaRu [80]
2 years ago
8

How many inner shell electrons does beryllium have?

Chemistry
2 answers:
stepladder [879]2 years ago
8 0
Beryllium has two inner shell electrons
olchik [2.2K]2 years ago
5 0
And two 2s electrons in the Be atom. Its electron configuration is thus 1s22s2or[He]2s2 The symbol [He] denotes the inner shell of two 1s electrons which have the same configuration as the noble gas He. The beryllium atom is noticeably smaller than the lithium atom
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Please help Sodium (Na) has an atomic number of 11 and an atomic mass of 23. Which of the following correctly shows the electron
fredd [130]
2,8,1
It's in group 1, so its outershell only has 1 electron, and the other shells are completely filled, so 2 then 8. :)
3 0
3 years ago
One mole of an atom of a substance is equal to
solong [7]

Answer:

One mole of a substance is equal to 6.022 × 10²³ units of that substance (atoms, molecules, or ions)

Explanation:

This number is Avogadro's number. The concept of the mole can be used to convert between mass and number of particles. its used to compare very large numbers.

4 0
3 years ago
Which of the following is equal to 2.0 liters? 200 mL 2,000 cm3 20 m3 20,000 mm3
ololo11 [35]
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4 0
3 years ago
Dipole-dipole interactions are (weaker than, stronger than, equal to) hydrogen bonds.
kozerog [31]

Answer and Explanation:

Dipole-Dipole interactions are <u>weaker than</u> hydrogen bonds.

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7 0
2 years ago
Imagine the reaction A + B ⇌ C + D is at equilibrium, where the forward and reverse reactions are at equal rates. What would hap
kondaur [170]

Answer:

Rate of forward reaction will increase.

Explanation:

Effect of change in reaction condition on equilibrium is explained by Le Chatelier's principle. According to this principle,

If an equilibrium condition of a dynamic reversible reaction is disturbed by changing concentration, temperature, pressure, volume, etc,  then reaction will move will in a direction which counteract the change.

In the given reaction,

A + B ⇌ C + D

If concentration of A is increase, then reaction will move in a direction which decreases the concentration of A to reestablish the equilibrium.

As concentration A decreases in forward direction, therefore, rate of forward reaction will increase.

3 0
3 years ago
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