All categories

3 years ago

The monatomic ions of Groups 1A(1) and 7A(17) are all singly charged. In what major way do they differ? Why?

Chemistry

2 answers:

grin007 [14]3 years ago

8 0

Answer:

Group 1A forms single charged cations whereas group 7A forms singly charged anions

Explanation:

Charge of an atom is indicative of the number of electrons lost or gained by the atom. Cations are positively charged ions formed by the loss of electrons while anions are negatively charged ions formed by the gain of electrons.

In the periodic table Group 1A belongs to the alkali metals which have a valence electron configuration of ns¹ i.e they have one electron in their valence orbital. Since they are metals these elements lose electrons readily gaining a +1 charge and forming a singly charged cation.

Group 7A belongs to the halogens which have a valence electron configuration of ns² np⁵ i.e they have 7 electrons in their valence orbital. They only need one more electron to complete their octet and become stable. As a result halogens are highly electronegative and form singly charged anion (-1 charge).

insens350 [35]3 years ago

3 0

Answer: Group 1 ions are known as cations and Group 17 ions are known as anions.

Explanation:

Ions are formed when an atom looses or gains electrons.

If an atom gains electrons, it leads to the formation of negative ions known as anions. For Example: Fluorine is a Group 17 element which gains 1 electron to form $F^-$ ions.

If an atom looses electrons, it leads to the formation of positive ions known as cations. For Example: Sodium is a Group 1 element which looses 1 electron to form $Na^+$ ions.

Hence, group 1 ions are known as cations and Group 17 ions are known as anions.

You might be interested in

when some ionic salts are dissolved in water the reaction is exothermic when others are dissolved in water the reaction is endot

antiseptic1488 [7]

One type of chemical process that can be either exothermic or endothermic is dissolving of salts in water. A salt is a compound made up of positively charged ions and negatively charged ions which are held together in a solid state because the positive and negative charges attract one another.

5 0

3 years ago

Consider the following data for five hypothetical elements: Q, W, X, Y, and Z. Rank the elements from most reactive to least rea

Natalka [10]

Answer:

Y, Q, W, Z and X

Y > Q > W > Z > X

Explanation:

To know the most reactive element, the element will be able to displace other metal in it compound. We also have to observe if the reaction occur. If the reaction didn't occur, that means the element is not reactive than the metal found in the other reactant. Invariably their will be no displacement.

Q + w+ Reaction occurs

Q element displace the metal w in it compound . This means Q is more reactive.

x +z+ No reaction

No reaction here. This means x is less reactive than z as it couldn't displace z in it compound.

w + z+ Reaction occurs

w is more reactive than z as it displaces z in it compound.

Q+ + Y Reaction occurs

Y is more reactive than Q as it displaces Q in it compounds.

Therefore, the most reactive to the least reactive is arrange as follows.

Y, Q, W, Z and X

8 0

3 years ago

How many molecules are contained in a 3.36 mole sample of NH3?

denpristay [2]

$3.36 \times (6.02 \times {10}^{23} ) = 2.0227 \times {10}^{24}$

7 0

3 years ago

a rock weighing 75.0g placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5 ml what is density of the rock i

andrezito [222]

Answer:

ρ≅13.0⋅g⋅mL−1 = 13.0⋅g⋅cm−3

Explanation:

Density=MassPer unit Volume = 75.0⋅g(36.5−31.4)⋅mL =??g⋅mL−1

Note that 1⋅mL = 1⋅cm−3; these are equivalent units of volume;
i.e. 1⋅cm3 = 1×(10−2⋅m)3=1×10−6⋅m3=10−3⋅L=1⋅mL.

7 0

3 years ago

What is the barycenter of the moon and the earth

kirill [66]

Answer:

The barycenter is the point in space around which two objects orbit. For the Moon and Earth, that point is about 1000 miles (1700 km) beneath your feet, or about three-quarters of the way from the Earth's center to its surface.

Explanation:

6 0

3 years ago