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3 years ago

Is there a common pattern for valence electrons on the periodic table

Chemistry

1 answer:

Stolb23 [73]3 years ago

3 0

Answer:

For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.

Explanation:

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Is the study of the natural world through observation and experimentation.

erica [24]

Answer:

YES

Explanation:

The systematic study of the structure and behavior of the physical and natural world through observation and experiment.

6 0

3 years ago

What is the volume of 0.80 grams of O2 gas at stp?

sergey [27]

Answer: The volume occupied by $O_2$ at STP is 0.56 L.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of oxygen = 0.80 g

Molar mass of oxygen = 32 g/mol

Putting values in above equation, we get:

$\text{Moles of oxygen}=\frac{0.80g}{32g/mol}=0.025mol$

At STP:

1 mole of a gas occupies 22.4 L of volume.

So, 0.025 moles of oxygen gas will occupy = $22.4\times 0.025=0.56L$ of volume.

Hence, the volume occupied by $O_2$ at STP is 0.56 L.

4 0

4 years ago

Read 2 more answers

Calculate the mass of a liquid with a density of 3.2 g/ml and a volume of 25 ml

erma4kov [3.2K]

The equation is x/25=3.2
*25 *25
-------------
x=80g

4 0

3 years ago

How many kilometers is the Troposphere away from Earth?

marishachu [46]

Approximating 7 to 20 kilometers
Hope this helps

5 0

4 years ago

Water molecules display a significant amount of cohesion (to each other) and adhesion (to other objects). This is part of what a

nlexa [21]

Answer:

Hydrogen Bonding

Explanation:

Hydrogen bonding occurs between the positive dipole of one water molecule with the negative dipole of another. It is an intermolecular force that gives water its unique properties such as: high boiling point, high specific heat, cohesion, adhesion, and density.

7 0

4 years ago

Read 2 more answers