3 years ago

How many protons neutrons and electrons does Francium have?

1 answer:

allsm [11]3 years ago

5 0

Protons: 87
Electrons: 87
Neutrons: 136

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ankoles [38]

<em> Pauli Exclusion Principle is about quantum numbers of an atom. Hund rule is about how electrons are filled to the orbitals of an atom.</em>

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2 years ago

kumpel [21]

Answer:

direct?

Explanation:

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3 years ago

Oxana [17]

Answer:

NaCl+H20

Explanation:

It is a neutralisation reaction in which NaOH is a base and HCl is an acid. On reaction it forms salt and water.

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3 years ago

klio [65]

Answer:

$13.93\ \text{g}$

Explanation:

Molecular weight of $CaCO_3$ = 100.0869 g/mol

Mass of $CaCO_3$ = 31.7 g

Moles of $CaCO_3$ = $\dfrac{31.7}{100.0869}=0.3167\ \text{mol}$

Moles of both $CaO$ and $CO_2$ is $0.3167\ \text{mol}$

Molecular weight of $CO_2$ = 44 g/mol

Mass of $CO_2$ = $44\times 0.3167=13.93\ \text{g}$

The mass of carbon dioxide formed simultaneously is $13.93\ \text{g}$ .

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3 years ago

pogonyaev

2 C2H6 + 7 O2 ➡️ 4 CO2 + 6 H2O

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3 years ago