This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Helium, He, is a nonmetallic gas and the second element in the periodic table. Rather than being ... (Read 99 times)

Wadzanai

  • Hero Member
  • *****
  • Posts: 528
on: Jul 29, 2018
Helium, He, is a nonmetallic gas and the second element in the periodic table. Rather than being placed adjacent to hydrogen, H, however, helium is placed on the far right of the table because
 
  A) hydrogen and helium repel one another.
  B) the sizes of their atoms are vastly different.
  C) they come from different sources.
  D) helium is most similar to other group 18 elements.

Question 2

Strontium, Sr (number 38), is especially dangerous to humans because it tends to accumulate in calcium-dependent bone marrow tissues (calcium, Ca, number 20).
 
  This fact relates to the organization of the periodic table in that strontium and calcium are both
  A) metals.
  B) in group 2 of the periodic table.
  C) made of relatively large atoms.
  D) soluble in water.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kthug

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


Wadzanai

  • Hero Member
  • *****
  • Posts: 528
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


kthug

  • Sr. Member
  • ****
  • Posts: 332
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Standing at the head of the table, apply oil or lotion to chest area. Spread lubricant fanning out ... Standing at the head of the table, apply oil or lotion to chest area. Spread lubricant fanning out ...
Bright-Line Spectra of Hydrogen and Helium Bright-Line Spectra of Hydrogen and Helium
A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ... A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed ...
periodic table periodic table
table table
APA Table - SPSS APA Table - SPSS
Video: Protein Secondary and Tertiary Structures - Animation

For a complete list of videos, visit our video library