millsemily millsemily

21-01-2016
Chemistry

contestada

Please help Sodium (Na) has an atomic number of 11 and an atomic mass of 23. Which of the following correctly shows the electron arrangement for sodium?

2, 9 2, 8, 1 2, 8, 2 2, 9, 1

Respuesta :

21-01-2016

2,8,1
It's in group 1, so its outershell only has 1 electron, and the other shells are completely filled, so 2 then 8. :)

Answer Link

Otras preguntas

To differentiate its candy from that produced by other candy manufacturers, the manufacturer of Green & Black brand confections advertises that it is the on

What is the median of these numbers? -59, -64, -66, -72, 73, -76, -76, 76, -84, 85

In this lesson, you learned about the causes, events, and effects of the French Revolution. Today, the island of St. Helena remains an overseas territory of the

A city ballot includes a local initiative that would legalize gambling. The issue is hotly contested, and two groups decide to conduct polls to predict the out

The major impact of the treaty of Versailles on Germany was the treaty that led to?

The given line passes through the points (0, -3) and (2,3). What is the equation, in point-slope form of the line that is parallel to the given line and passes

A 96-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350 N. For the first 15 m the floor is frictionless, and for the

In the problem -1/2x = -7. Can -x= 14 be the correct answer?

Proof by induction on the number of horses: Basis Step. There is only one horse. Then clearly all horses have the same color. Induction Hypothesis. In any group

Fifteen more than three times a number is 45

ACCESS MORE EDU ACCESS