All categories

3 years ago

How many electrons would a neutral atom of nitrogen need to gain in order to have a full valence electrons shell

2 answers:

4 0

Nitrogen atom has a valence electrons of 5 electrons. A full octet or full valence electrons shell is composed of 8 electrons. Hence, an additional of 4 electrons are needed for it to become full. this is achieved by covalent bonding where electrons are shared or ionic bonding where electrons are transferred.

Mila [183]3 years ago

4 0

Answer: The correct answer is 3

Explanation:

it's correct because.. because i got it correct on my test

~HOPE THIS HELPS.!

You might be interested in

Which of these contains information about the elements

Monica [59]

Post the question so we can help

7 0

2 years ago

When a teacher dilutes 50 mL of 2.0 M NaOH to 0.50 M, what volume of NaOH results?

JulijaS [17]

Answer:

= 200 mL

Explanation:

Using the dilution formula;

M1V1 = M2V2 ;

Where, M1 is the concentration before dilution, V2 is the volume before dilution, while M2 is the concentration after dilution and V2 is the volume after dilution.

M1 = 2.0 M

V1 = 50 mL

M2 = 0.50 M

V2 = ?

V2 = M1V1/M2

= ( 2.0 × 50 )/ 0.5

= 200 mL

Therefore, the volume after dilution will be, 200 mL

6 0

2 years ago

Balance 6Sb +6Cl2– 6SbCl3

labwork [276]

<u>Answer:</u>

<u>Balancin</u>g is making the number of atoms of each element same on both the sides (reactant and product side).

To find the number of atoms of each element we multiply coefficient and the subscript

For example $5 Ca_1 Cl_2$ contains

5 × 1 = 5,Ca atoms and

5 × 2 = 10, Cl atoms

If there is a bracket in the chemical formula

For example $3Ca_3 (P_1 O_4 )_2$ we multiply coefficient $\times$ subscript $\times$ number outside the bracket.......... to find the number of atoms

(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

3 × 3 = 9, Ca atoms

3 × 1 × 2 = 6, P atoms

3 × 4 × 2 = 24, O atoms are present.

Let us balance the equation given

$1Sb +1Cl_2 > 1SbCl_3$

(Unbalanced)

Reactant side - Number of atoms of each element - Product side

1 - Sb - 1

2 - Cl - 3

So we have on the product side odd number of Cl to convert to even number, multiply $SbCl_3$ by 2

The equation changes to

$1Sb +1Cl_2> 2SbCl_3$

Reactant side - Number of atoms of each element - Product side

1 - Sb - 2

2 - Cl - 6

Multiplying Sb by 2 and $Cl_2$

$2Sb +3Cl_2> 2SbCl_3$

The equation is balanced now!!!!

Reactant side - Number of atoms of each element - Product side

2 - Sb - 2

6 - Cl - 6

Balanced.

4 0

2 years ago

In effect of concentration on rate,why is it important to

MrRissso [65]

Explanation:

If we change the concentration of Potassium since we take KI solution, concentration of I- changes, then the rate changes accordingly

Rate = k[H2O2 ]^a[I-]^b [H+]^c

The concentrations of I- and H+ are held constant in the procedure

thus to study the rate of the reaction, concentration of KI solution has to be constant only the peroxide solution varies.

7 0

2 years ago

When Robert Hooke looked at cork through a microscope , he named what he saw “cells” because__________

choli [55]

Answer:

D. The cork looked like tiny rectangular rooms

Explanation:

The invention that helped scientists discover the cell is the microscope. Tell why Hooke called the structures he saw in the cork cellular("small rooms"). He called them cellular because the box like cells reminded him of the monks monasteries.

6 0

2 years ago