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padilas [110]
3 years ago
8

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (Use the periodic table as ne

cessary

Chemistry
1 answer:
PolarNik [594]3 years ago
4 0

Answer:

Explanation:

Group one:

The elements of group one shows +1 charge because these all are metals and lose their one valance electron.

Hydrogen lithium sodium potassium rubidium cesium francium

Group 2:

The elements of group two shows +2 charge because these all alkali metals and lose their two valance electrons.

beryllium magnesium calcium strontium barium radium

Group 3:

The elements of group three-B shoes +3 charge by losing three valance electrons.

Scandium yttrium lanthanum actinium

Group 4:

The elements of group 4th A and 4th B lose four electrons or gain four electrons to complete the octet and shows +4 or -4 charge.

Group 5:

Group 5th elements gain three electrons and shows -3 charge to complete the 8 electrons. (octet).

It involve the elements of group 5th A.

Group 6:

The elements of group 6A gain two electrons to complete the octet and shows -2 charge.

Group 7:

The elements of group 7A gain one electron to complete the octet and shows -1 charge.

Group 8:

The elements of group 8A are noble gases and have complete octet. That's why shows 0 charge.

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Which compound has both ionic and covalent bonding? *
AlekseyPX

Answer:

Calcium carbonate

Explanation:

Ionic compounds that tend to have one or more polyatomic ions are the ones that tend to exhibit both ionic and covalent bonding. The only one that meets this is calcium carbonate.

7 0
3 years ago
Which property determines whether a substance is a solid or liquid at room temperature?
jek_recluse [69]

Answer:

1. The kinetic energies of the particles (atoms, molecules, or ions) that make up a substance. Kinetic energy tends to keep the particles moving apart.

2. The attractive intermolecular forces between particles that tend to draw the particles together.

6 0
2 years ago
What is the ratio of [a–]/[ha] at ph 3.75? the pka of formic acid (methanoic acid, h–cooh) is 3.75?
nataly862011 [7]
To determine the ratio of [a–]/[ha] of a solution of formic acid, we use the Henderson–Hasselbalch equation which relates the pH, pKa and the concentration of the ions in the solution. It is expressed as:

pH = pkA + log [a–]/[ha]

Substituting the values given,

3.75 = 3.75 + log [a–]/[ha]
0 = log [a–]/[ha]
[a–]/[ha] = 1

Therefore, the concentration of the CHOO- ion and the formic acid are equal.
5 0
3 years ago
If a cold piece of metal is added to hot water, the water will
Roman55 [17]

Answer:

Over time the metal will cool and the water will heat up. Eventually the two objects will have the same temperature

Explanation:

5 0
3 years ago
Which combination will produce a precipitate? Which combination will produce a precipitate? KOH (aq) and HNO3 (aq) AgC2H3O2 (aq)
crimeas [40]

Explanation:

A precipitate is defined as an insoluble substance that emerges upon mixing of two aqueous solutions.

For example, 2NaOH(aq) + Sr(NO_{3})_{2}(aq) \rightarrow Sr(OH)_{2}(s) + 2NaNO_{3}(aq)

As precipitate is a solid and it is represented by (s). And, an aqueous solution is represented by (aq).

So, the products of the given reactants will be as follows.

KOH(aq) + HNO_{3} \rightarrow KNO_{3}(aq) + H_{2}O(aq)

AgC_{2}H_{3}O_{2}(aq) + HC_{2}H_{3}O_{2}(aq) \rightarrow \text{No reaction}

Pb(NO_{3})_{2}(aq) + HCl(aq) \rightarrow PbCl_{2}(s) + 2HNO_{3}(aq)

Cu(NO)_{3}_{2}(aq) + CH_{3}COOK(aq) \rightarrow Cu(CH_{3}COO)_{2})(aq) + 2KNO_{3}(aq)

2NaOH(aq) + Sr(NO_{3})_{2}(aq) \rightarrow Sr(OH)_{2}(s) + 2NaNO_{3}(aq)

Hence, we can conclude that out of the given options, these two equations will produce a precipitate.

Pb(NO_{3})_{2}(aq) + HCl(aq) \rightarrow PbCl_{2}(s) + 2HNO_{3}(aq)

2NaOH(aq) + Sr(NO_{3})_{2}(aq) \rightarrow Sr(OH)_{2}(s) + 2NaNO_{3}(aq)

7 0
3 years ago
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