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3 years ago

Atoms that have the same number of outer electrons...

Chemistry

1 answer:

telo118 [61]3 years ago

7 0

Answer:

d.) belong to the same family of elements

Explanation:

All atoms of elements present in same group having same number of valance electrons. Thus the elements in same group having same properties.

For example:

Consider the second group. It consist of alkaline earth metals. There are six elements in second group. Beryllium, magnesium, calcium, strontium, barium and radium.

All have two valance electrons.

Electronic configuration of Beryllium:

Be = [He] 2s²

Electronic configuration of magnesium.

Mg = [Ne] 3s²

Electronic configuration of calcium.

Ca = [Ar] 4s²

Electronic configuration of strontium.

Sr = [Kr] 5s²

Electronic configuration of barium.

Ba = [Xe] 6s²

Electronic configuration of radium.

Ra = [ Rn] 7s²

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If a gas at 25oC occupies 3.60 L at a pressure of 2.50 atm, what will be its volume at a pressure of 1.00 atm if the temperature

Elenna [48]

Answer:

Explanation:

Given parameters:

Initial volume V₁ = 3.6L

Initial pressure P₁ = 2.5atm

Final pressure P₂ = 1atm

Unknown:

Final volume V₂ = ?

Condition: constant temperature = 25°C

Solution:

This problem compares the volume and pressure of a gas at constant temperature.

This is highly synonymous to the postulate of Boyle's law. It states that "the volume of a fixed mass of gas is inversely proportional to the pressure provided that temperature is constant".

Mathematically;

P₁V₁ = P₂V₂

where P and V are pressure and volume

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3 years ago

Which element in period 4 has the highest electronegativity?

MissTica

The trend of electronegativity in the periodic table is increasing from left to right and from bottom to top. In the period 4 which is horizontal, the element which has the highest electronegativity is the right most element except the noble gas. This element is bromine.

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An atom of any element must contain

hichkok12 [17]

An atom of any element must contain...
an equal number of protons and electrons

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cupoosta [38]

Answer:

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Carbohydrates: used for energy

Explanation:

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tigry1 [53]

Answer:

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