miapackard miapackard

13-10-2017
Chemistry

contestada

Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)?
A. Beryllium B. Sodium C. Potassium D. Magnesium

Respuesta :

14-02-2019

The correct answer is Magnesium (Mg)

Answer Link

Otras preguntas

Participants hit a punching bag while either ruminating about the person who angered them or thinking about becoming physically fit. A third group of participan

If the exports (in million $) for the period 2006 through 2010 were $878, $892, $864, $870, and $912, respectively, what are these values called g

Find the surface area of the pyramid shown to the nearest whole number. 6 ft 5 ft 5 ft Not drawn to scale a. 85 A b. 145 ft c. 60 i d. 25 ft

Which of the following is not one of the six key decisions in project management? a. Identify projects to implement b. Selecting the project manager & the p

Consider a vacuum-filled parallel plate capacitor (no dielectric material between the plates). What is the ratio of conduction current Jc to displacement curren

What is most likely to react strongly with an acid? A. Noble gases B. All of these C. Lemon juice D. Metal hydroxides

Which of the following statements explains why temperature increases with altitude in the thermosphere? A) The air particles in the thermosphere absorb high-ene

Students exhibiting socialized-aggressive behaviors such as fighting, stealing, destroying property, and refusal to obey teachers may benefit from:

what is the Newton's second law?explain.

A very large tank initially contains 100L of pure water. Starting at time t = 0 a solution with a salt concentration of 0.8kg/L is added at a rate of 5L/min. Th