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2 years ago

What are the period and group trends in electronegativities

1 answer:

8 0

Electronegativity of an element decreases as we move down a group on the periodic table and electronegativity increases while moving from left to right across a period on the periodic table.

Explanation:

The electronegativity increases as we move from left to right across a period because from left to right across a period, the nuclear charge is increasing Hence the attraction for the valence electrons also increases.
As we move down a group, the atoms of each element have an increasing number of energy levels. The distance between the nucleus and valence electron shell increases and reduces the attraction for valence electrons. Hence electronegativity decreases as we move from top to bottom down a group.

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Glycerine is viscous than water?why

Sloan [31]

Answer:

Yes

Explanation:

Why is glycerol more viscous than water?

The glycerine is more viscous than water because due to presence of hydrogen atoms , we all know that glycerine has more hydrogen bonding than water molecule , which makes an aggregation which means that glycerine is more viscous than water , in simple words glycerine can't flow as that of water molecule.

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2 years ago

When the temperature of a sample of neon gas increases, what else increases? Distance between the atoms Kinetic energy of the at

Allushta [10]

Answer: Kinetic Energy of the atoms also increases.

Explanation: We are given that the temperature of the gas increases.

Relation between kinetic energy and temperature follows:

$K.E._({avg})=\frac{3RT}{2N_A}$

where, K = Average Kinetic energy

R = Gas constant

T = Temperature

$N_A$ = Avogadro's number

As seen from the relation above, the Kinetic energy of the gas is directly proportional to the temperature, hence as the temperature increases, kinetic energy of the atom also increases.

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3 years ago

Is malachite A mineral, a rock or neuter

dybincka [34]

a malachite is a mineral

5 0

2 years ago

Diethyl ether is a commonly used solvent for GC analyses because of its low boiling point. In this experiment, why was heptane u

Natali [406]

Answer:

A. Diethyl ether will react with the alkenes that were formed in the experiment.

Explanation:

Ethers such as diethyl ether dissolve a wide range of polar and nonpolar organic compounds. Nonpolar compounds are generally more soluble in diethyl ether than alcohols because ethers do not have a hydrogen bonding network that must be broken up to dissolve the solute.

5 0

2 years ago

Which best explains why the game of economics does not have a single goal?

Gemiola [76]

Answer: Different people want different things out of life

Your Welcome ^_^

3 0

3 years ago