« previous next »

Author Question: If an atom has become a positive ion, it has A) gained an electron or electrons. B) ... (Read 60 times)

meagbuch

  • Hero Member
  • *****
  • Posts: 568
on: Jul 29, 2018
If an atom has become a positive ion, it has
 
  A)
 
  gained an electron or electrons.
  B)
 
  lost an electron or electrons.
  C)
 
  gained a proton or protons.
  D)
 
  gained a proton and an electron.
  E)
 
  lost a proton or protons.

Question 2

What is the nuclear radius of 90Sr?
 
  A)
 
  4.0  10-15 m
  B)
 
  1.2  10-15 m
  C)
 
  1.1  10-13 m
  D)
 
  5.4  10-15 m
  E)
 
  3.3  10-13 m


kristenb95

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Hydrothermal Worm Viewed Under An Electron Microscope Hydrothermal Worm Viewed Under An Electron Microscope
Stay positive Stay positive
Positive and Negative Punishment Positive and Negative Punishment
Draw the electron dot formula for the perchlorate ion, ClO4-. How many nonbondin Draw the electron dot formula for the perchlorate ion, ClO4-. How many nonbondin
Polyribosomes as seen under the electron microscope Polyribosomes as seen under the electron microscope
Color-enhanced electron micrograph of a DNA replication bubble and replication forks Color-enhanced electron micrograph of a DNA replication bubble and replication forks
Video: Male Reproductive System - Testosterone

For a complete list of videos, visit our video library