All categories

4 years ago

Magnesium and calcium have similar chemical properties because their atoms in the ground state have

Chemistry

2 answers:

stiv31 [10]4 years ago

4 0

Answer:

The answer is 4

Explanation:

Since magnesium and calcium have the same number of valence electrons, and since the valence electrons are located in the outermost shell so the reasonable is 4

zhenek [66]4 years ago

3 0

Answer:

4- two electrons in the outermost shell

Explanation:

Magnesium and Calcium both have 2 electrons in their valence/outermost shell. Chemical properties of an element is determined by the configuration of its electrons in orbits around nucleus. Since the number of protons and electrons are the same it essentially means atomic number determines the chemical behavior of an element so that is why Mg and Ca have same chemical properties.

You might be interested in

AICI3(s)+Ca 3N2(s)-AIN(S)+CaCl2(s)

disa [49]

Answer:

2AlCl3 + Ca3N2 - 2AlN+ 3CaCl2

8 0

3 years ago

Compute the percent ionic character of the interatomic bonds for the following compounds : a. TiO2 b. ZnTe c. CsCld. InSb e. MgC

sesenic [268]

Answer:

a. 63.2%

b. 11.7%

c. 73.3%

d. 0.995%

e. 55.5%

Explanation:

An ionic compound is a compound that is formed by ions, so one of the elements must donate electrons (which is the cation, the positive ion), and the other will receive these electrons (which is the anion, the negative ion).

The power of an element has to attract the electrons is called electronegativity, and so, as higher is the difference of electronegative of the elements, it is more probable that one of them will "still" the electrons and will form an ionic compound. The percent of this ionic character can be found by the Pauling's equation:

$%IC = (1 - e^{-0.25*(x_A - x_B)^2})$ *100%

Where $x_A - x_B$ is the electronegativity difference of the elements. Thus, consulting an electronegativity table:

a. $x_{Ti}$ = 1.5

$x_{O}$ = 3.5

$%IC = (1 - e^{-0.25*(3.5 - 1.5)^2})$ *100%

%IC = 63.2%

b. $x_{Zn}$ = 1.6

$x_{Te}$ = 2.1

$%IC = (1 - e^{-0.25*(2.1 - 1.6)^2})$ *100%

%IC = 11.7%

c. $x_{Cs}$ = 0.7

$x_{Cl}$ = 3.0

$%IC = (1 - e^{-0.25*(3.0 - 0.7)^2})$ *100%

%IC = 73.3%

d. $x_{In}$ = 1.7

$x_{Sb}$ = 1.9

$%IC = (1 - e^{-0.25*(1.9 - 1.7)^2})$ *100%

%IC = 0.995 %

e. $x_{Mg}$ = 1.2

$x_{Cl}$ = 3.0

$%IC = (1 - e^{-0.25*(3.0 - 1.2)^2})$ *100%

%IC = 55.5%

4 0

3 years ago

Whose cell walls may contain cellulose can be plantlike, animal like or fungus

lapo4ka [179]

Answer:

I'm not sure

Explanation:

sorry wish that I did tho

8 0

3 years ago

Which part of dalton's theory did thomson's findings dispute? atoms of different elements have different masses. atoms of the sa

skad [1K]

Answer is: the atom is the smallest known particle of matter.
John Dalton claimed that atom is indestructible and a<span>ll atoms of a given element are identical in mass and properties.
</span>Thomson discovered electron and found the first evidence for isotopes<span> of a stable element.</span>

7 0

3 years ago

Read 2 more answers

Based on your solubility rules which of the following compounds would form a precipitate water?

Novosadov [1.4K]

H2SO4+NaOH=Na2SO4+H2O

3 0

3 years ago