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jeka57 [31]
3 years ago
8

What is the ground-state electron configuration of a neutral atom of cobalt?

Chemistry
1 answer:
Andre45 [30]3 years ago
8 0
4d7 , 3s2 will be the valence shell electronic configuration of a neutral atom of cobalt!
You might be interested in
What ions and/or molecules (apart from water) are present in relatively large proportions in a solution of a weak acid hclo (aq)
matrenka [14]

HClO, perchloric acid is a weak acid. Unlike strong acids like HCl or H2SO4 it not dissociate completely but partially such that an equilibrium exists between the dissociated ions and the undissociated acid. The equilibrium is as shown below:

HClO + H2O ↔ H3O⁺ + ClO⁻

Since HClO is a weak acid, the reverse reaction is favored over the forward reaction. Thus apart from water, HClO will be present in large amounts.

3 0
3 years ago
20<br> How do you solve this ?
Kaylis [27]

Answer:

eight oxygen atoms

Explanation:

This formula shows that in one mole of this compound, there are 3 moles of Ca atoms that combine with 2 moles of the PO4(phosphate) groups, which gives a total of 2 moles of P atoms and 8 moles of 0 atoms.

5 0
3 years ago
How many molecules of NH3 are produced from 8.01x10-4g of H2
lara31 [8.8K]

Answer:

1.61 x 10²⁰ molecules

Explanation:

Given parameters:

Mass of the hydrogen gas  = 8.01 x 10⁻⁴g

Unknown

Number of molecules of NH₃ = ?

Solution:

Given reaction:

                     N₂  +  3H₂   →   2NH₃

We have to solve from the known to the unknown

  • The known specie is the mass of H₂ ;

             find the number of moles of the specie;

    number of moles = \frac{mass}{molar mass}

     Molar mass of H₂ = 2(1) = 2g/mol

   Number of moles  = \frac{0.0008}{2}   = 0.0004mol

  • 3 moles of H₂   will produce 2 moles of NH₃

      0.0004 moles of H₂ will produce \frac{0.0004 x 2}{3}   = 0.00027moles of NH₃

   1 mole of a substance contains 6.02 x 10²³ molecules

     0.00027mole of NH₃ will contain 0.00027 x 6.02 x 10²³

                               = 1.61 x 10²⁰ molecules

4 0
3 years ago
Can two objects be made of the Same substance if they have the same volume
GREYUIT [131]

Answer: no

Explanation: theres a chance but generally no because there can be different substances in different amounts which can have similar volumes

5 0
3 years ago
Is Fe(NO3)3 ionic Or covalent
nadya68 [22]

Answer:

Fe(NO3)3 is ionic.

Explanation:

Ionic bond:

Ionic bond is formed when oppositely charged ions attract each others i.e negative and positive ions.

We know that a neutral atom consist of equal number of proton and electron, cancel the charge of each other that is equal in magnitude and make the atom neutral or we can say that net charge is zero.

But when the atom lose or gain the electron, imbalance of neutron electron occur so charge will not remain zero and atom is no more to be said neutral.

In given compound Fe(NO3)3 the Fe is act as cation while nitrate is act as anion.

3Fe+ (Cation)

3NO3 ∧ -1 (anion)

3Fe∧+1 + 3NO3 ∧ -1  → Fe(NO3)3

Another example of ionic compound:

Now consider the sodium chloride which is an ionic compound. It is formed by the complete transfer of electron from sodium to chlorine atom and form ionic bond. In this ionic compound sodium carry positive charge and chlorine carry negative charge there is attraction between these oppositely charged atoms.

Na+ (cation)

Cl- (anion)

NaCl

Covalent bond:

Covalent  bond involve the sharing of electrons between the atoms. It is also called molecular bond. These electron pairs are called bonding electrons are shared pair of electrons.

3 0
3 years ago
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