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Eduardwww [97]
4 years ago
10

Generally speaking, which group would have the lowest electronegativity values in a period? Group 1 Group 3 Group 14 Group 17

Chemistry
2 answers:
ivolga24 [154]4 years ago
7 0

Answer:

The answer would be group 1 I just took the test and that is the correct answer!!

Explanation:

KatRina [158]4 years ago
6 0

Here we have get the group which has the lowest electronegativity in a period among the given groups.

The group 1 elements are more electropositive in nature the removal one electron will have its previous nobel gas configuration.    

The electronegativity is not an inherent property of the isolated atom. This concept has been generated for a convenient study of hetero-molecular covalent bond.

The electronegativity is defined as a measure of the tendency of an atom in a molecule to attract the electrons involved in the chemical bond formation.

The group 1 elements are H, Li, Na, K, Rb, Cs and Fr.

The group 3 elements are Sc, Y, La, Ac.

The group 14 elements are C, Si, Ge, Sn, Pb.

The group 17 elements are F, Cl, Br, I, At.

Now the group 1 elements have the valence shell electron ns¹ in the period.

Similarly, group 3, have the valence shell electrons ns²(n-1)d⁰⁻¹⁰(n-2)f⁰⁻¹⁴

group 14 have the valence shell electrons ns²np²

and group 17 have the valence shell electrons ns²np⁵.

Thus the group 1 elements are more electropositive in nature the removal one electron will have its previous nobel gas configuration.    

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What is the mass of phosphorus that contains twice the number of atoms found in 14
yulyashka [42]

Answer:

15.5 gm

Explanation:

What is the mass of phosphorus that contains twice the number of atoms found in 14 g of iron?

[Relative atomic mass : P = 31; Fe = 56]

14 gm Fe = 14gm/ 56 gm/mole = 14 mole gm/56gm = 14/56 mole

0.25 moles

2 X 0.25 = 0.5 moles

1 mole P = 31 gm

so

0.5 moles P =31/2 =15.5 gm

3 0
3 years ago
Why is it better to use the metric system, rather than the English system, in scientific measurement?
frez [133]
The metric system is based on powers of 10 so it is much easier to convert units, often just by moving the decimal point.
3 0
3 years ago
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Hydrogen gas and solid gold(III) sulfide are reacted. Pure solid gold metal is formed and gaseous hydrogen sulfide is released.
alexdok [17]

The reactants of the reaction will be solid gold (III) sulfide and hydrogen gas, while the products will be pure solid gold and hydrogen sulfide gas.

<h3>Chemical reactions</h3>

Reactants react together during reactions to arrive at products.

In this case, solid gold (III) sulfide and hydrogen gas react according to the following equation:

Au_2S_3(s) + 3 H_2 (g)-- > 2 Au(s) + 3H_2S(g)

Reactants = solid gold (III) sulfide, hydrogen gas

Products: pure solid gold, hydrogen sulfide gas

More on chemical reactions can be found here: brainly.com/question/1689737

8 0
2 years ago
What type of reaction takes place
choli [55]

Answer:

Hydration

Explanation:

* 2-propanol is converted to propene using heated alumina beads as the catalyst. The product gas is purified with a dry ice–propanol cold trap.

* the propene is hydrogenated to propane using a palladium catalyst in nearly 100% yield

5 0
3 years ago
If a liter of water is heated from 20c to 50c what happens to its volume
aleksklad [387]

The volume increases to 1.009 L.

<em>V</em>= <em>V</em>_0 +βΔ<em>T</em>

The thermal expansion coefficient (β) of water changes with temperature, so we must calculate the volume change over small (10 °C) intervals.

20 °C to 30 °C: <em>V</em> = 1 L + 0.000 207 L·°C^(-1) × 10 °C = 1.002 07 L

30 °C to 40 °C: <em>V</em> = 1.002 07 L + 0.000 303 L·°C^(-1)] × 10 °C = 1.005 10 L

40 °C to 50 °C: <em>V</em> = 1.005 10 L + 0.000 385 L·°C^(-1)] × 10 °C = 1.008 95 L

The volume increases by about 9 mL when the temperature increases from 20 °C to 50 °C.

4 0
4 years ago
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