Ask question

Ask question

All categories

2 years ago

12

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

cessary.) Group Most Likely Ionic Charge # of Valence Electrons I +1 II +2 III +3 IV +4 or -4 V -3 VI -2 VII -1 VIII 0

2 answers:

hodyreva [135]2 years ago

5 0

Answer:

Explanation:

Group Most Likely Ionic Charge Number of Valence Electrons

I +1 1

II +2 2

III +3 3

IV +4 or -4 4

V -3 5

VI -2 6

VII -1 7

VIII 0 8

For elements in group IV and above, their ionic charge is (8-number of their valence electrons.)

Degger [83]2 years ago

4 0

<u>Explanation:</u>

Valence electrons are defined as the electrons which are present in the outermost shell of an atom.

The number of valence electrons in a particular group will be equal to the group number.

Number of valence electrons = Group number

The given table follows:

Group Most likely ionic charge No. of valence electrons

I +1 1

II +2 2

III +3 3

IV +4 or -4 4

V -3 5

VI -2 6

VII -1 7

VIII 0 8

You might be interested in

Consider the reaction Mg₂Si(s) + 4 H₂O(ℓ) → 2 Mg(OH)₂(aq) + SiH₄(g). How many grams of silane gas (SiH₄) are formed if 25.0 g of

Neko [114]

Answer:

10.60 grams of silane gas are formed.

Explanation:

From the reaction:

Mg₂Si(s) + 4H₂O(l) → 2Mg(OH)₂(aq) + SiH₄(g)

We know that the limiting reactant is Mg₂Si, so to find the mass of SiH₄ formed we need to calculate the number of moles of Mg₂Si:

$\eta_{Mg_{2}Si} = \frac{m_{Mg_{2}Si}}{M_{Mg_{2}Si}}$

Where:

m: is the mass of Mg₂Si = 25.0 g

M: is the molar mass of Mg₂Si = 76.69 g/mol

$\eta_{Mg_{2}Si} = \frac{m_{Mg_{2}Si}}{M_{Mg_{2}Si}} = \frac{25.0 g}{76.69 g/mol} = 0.33 moles$

Now, the stoichiometric relation between Mg₂Si and SiH₄ is 1:1 so:

$\eta_{Mg_{2}Si} = \eta_{SiH_{4}} = 0.33 moles$

Finally, the mass of SiH₄ is:

$m_{SiH_{4}} = \eta_{SiH_{4}}*M_{SiH_{4}} = 0.33 moles*32.12 g/mol = 10.60 g$

Therefore, 10.60 grams of silane gas are formed.

I hope it helps you!

3 0

2 years ago

Eyeglasses provide as much protection as safety goggles. * true or false

Artyom0805 [142]

False. Eyeglasses do not cover all around the eye however safety goggles do

7 0

3 years ago

Read 2 more answers

What is the mass of a sample of alcohol (specific heat = 2.4 J/gC), if it requires 4780 J of heat to raise the temperature by 5.

insens350 [35]

The mass of a sample of alcohol is found to be = m = 367 g

Hence, it is found out that by raising the temperature of the given product, the mass of alcohol would be 367 g.

Explanation:

The Energy of the sample given is q = 4780

We are required to find the mass of alcohol m = ?

Given that,

The specific heat given is represented by = c = 2.4 J/gC

The temperature given is ΔT = 5.43° C

The mass of sample of alcohol can be found as follows,

The formula is c = $\frac{q}{mt}$

We can drive value of m bu shifting m on the left hand side,

m = $\frac{q}{ct}$

mass of alcohol (m) = $\frac{4780}{(2.4)( 5.43)}$

m = 367 g

Therefore, The mass of the given sample of alcohol is

m = 367g

It requires 4780 J of heat to raise the temperature by 5.43 C in the process which yields a mass of 367 g of alcohol.

4 0

3 years ago

I'LL MARK U BRAINLIEST-How many kW does a nuclear power plant use in a year?

Lisa [10]

Answer:

Nuclear power comes from nuclear fission

Nuclear power plants use heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plan

Explanation:

8 0

2 years ago

Terry, a student, performs a titration. He completes these steps as part of his titration procedure: 1. He cleans and rinses a b

Contact [7]

Answer:

D

Explanation:

D is the answer because 2 is needed to know

6 0

2 years ago

Read 2 more answers