3 years ago

Oxygen has an atomic number of 8. in order to fill its outer electron shell, how many electrons does it need?

Chemistry

1 answer:

Lina20 [59]3 years ago

3 0

Oxygen has 8 electrons. On the outer ring, it has 6 valance electrons. It need 2 more valance electrons to be stable.

You might be interested in

Order the bowls from coolest to warmest

vampirchik [111]

Answer:

bowl 5, bowl 3, bowl 4, bowl 1, bowl 2

Explanation:

3 0

3 years ago

A pressure cooker contains 5.68 liters of air at a temperature of 394 K. If the absolute pressure of the air in the pressure coo

Arturiano [62]

Answer:

Explanation:

We shall find out volume of air at NTP or at 273 K and 10⁵ Pa ( 1 atm )

Let it be V₂

$\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}$

$\frac{2\times 10^5\times 5.68}{394} =\frac{10^5\times V_2}{273}$

V₂ = 7.87 litres

22.4 litres of any gas is equivalent to 1 mole

7.87 litres of air will be equivalent to

7.87 / 22.4 moles

= .35 moles .

7 0

2 years ago

What is the answers pls need it before tomoz

QveST [7]

Metals consist of giant structure of atoms arranged in a regular pattern. The electrons in the outer shell of metal atoms are shared , and are free to move throughout the structure. Therefore the structure is formed by positive charged metal ions held together by a 'sea' of delocalised.

5 0

3 years ago

Which of the following is needed to determine the molar mass of a<br> molecule?

jenyasd209 [6]

Answer:

atomic mass

Explanation:

5 0

2 years ago

108/49 In ? 108/48 Cd + ? In the equation above, what particle or type of radiation needs to be included on the right hand side

Oksanka [162]

Answer: b) positron

Explanation:

The antiparticle or the antimatter counterpart of the electron is called positron.

The positron has an electric charge of +1 e and same mass as an electron. When a positron collides with an electron, annihilation takes place.

Below is an attachnent that further explains this

7 0

2 years ago