01-06-2015
Chemistry

Answered

Magnesium and calcium have similar chemical properties because a magnesium atom and a calcium atom have the same
(1) atomic number
(2) mass number
(3) total number of electron shells
(4) total number of valence electrons

Answer :

21-05-2017

The correct answer is (4) total number of valence electrons. This means that they have the same number of electrons in their final electron shell and the same number of electrons that are prepared to establish bonds with electrons from other elements. No elements have the same atomic number and the same mass number.

Answer Link

Other Questions

Graph each inequality. Name the solution set. ≥ 2/ 3 − 1, y ≤ −2 4

Money paid for the use of factors of production such as labor and capital is an: A. Implicit opportunity cost.B. Explicit financial cost.C. Accounting profit.D.

Para compreendermos a função das conjunções e preposições no interior do texto, vamos seguir o exemplo de ABAURRE (2000, p. 129): "Podemos assumir que as parede

i) Theme, Plot, Character, Novellaii) Billy Budd, Pearl, Joseph Conrad, Death In Venice1) Match the columns:1. Picaresque novel2. Epistolary novel3. Allegorical

Pseudostratified columnar epithelium contains multiple layers of epithelial cells.

Which Canadian team was the last to win the Stanley Cup, and in what year did they achieve this victory?A) Calgary Flames, 1989B) Edmonton Oilers, 1990C) Montre

Type the correct answer in the box. Round your answer to the nearest hundredth.Element [tex]$X$[/tex] has two isotopes. The table gives information about these

A bridge connecting two cities separated by a lake has a length of [tex]$5684.106$ \, \text{yd}$[/tex]. Use the table of facts to find the length of the bridge

Read the short article on the website, "50 Years Later, The Tragedy of Nuclear Tests in Nevada."1. What event is described in the article?2. What happened to ma

Describe two creative works that represent opposing ideas related to the sustainability movement.In a culture of conflicting voices, what roles can individuals

What is the answer to ( what is 1/3 of a circle measured in degrees)

Hans's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Hans $5.80 per pound, and type B coffee costs $4.10 per pound

Which fraction expresses -10/45 in lowest terms? A.-1/3 B.-2/9 C. - 1/9

a bakery has a fixed cost of $119.75 per day plus $2.25 for each pastry. the bakery would like to keep its daily costs at or below $500 per day. what is the max

What is the solution of log3x − 12 729 = 6? x = −5 x = −3 x = 3 x = 5 *"3x- 12" is next to log, but it's in the bottom, like an exponent, but instead of it bei

John has read the first 114 pages of a novel. He has read 3 pages less than one-third the novel. write an equation to describe the total number of pages p in th

which fractions are equivalent to - 15/20 ? Choose all answers that are correct. A. -2/3 B.9/-12 C.-12/16 D.-25/30

Body parts can indicate two or more species share common ancestors

suppose you are riding in a car. Describe your motion relative to the car, the road and the sun

what is the greatest perimeter of a rectangle with an area of 39 ft.²