What do alkaline earth elements have in common

Answers

Answer 1

Answer:

The alkaline earth metals are all of the elements in the second column (column 2A) of the periodic table. This group includes beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra). Alkaline earth metals have only two electrons in their outermost electron layer

Answer 2

Answer:

The right answer is B

Related Questions

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Which is an example of Temporal Isolation?A.Flowers that bloom in different months.
B.Birds that have different mating calls
C.Fruits flies that mate in different locations.
D.Squirrels that have different fur colors

Answers

Answer:

A. Flowers that bloom in different months

Explanation:

Nature has a way of preventive the interbreeding of closely related species and temporal isolation is one of them. When species reproduce at a different time there is little chance of hybridization (intermixing) between two related species. Since this process occurs before the mating it is also termed as pre-mating isolation.

Answer:

a.) Flowers that bloom in different months

Explanation:

Hello,

Temporal isolation is exposed when two populations are isolated by cause of when they do perform actions according to their instinct. This is considered as large a difference as mating seasons and as small a difference as what time of day they are active. Isolation makes it less likely for two populations to reproduce together, that's why flowers that bloom in different months is a clear example of this biological event.

Best regards.

What is the speed of a man that travels 2 meters in 6.5 seconds?

Answers

Answer:

≈ 0.31 m/s

Explanation:

v = d/t

= 2m/6.5s

= 0.3079 m/s

≈ 0.31 m/s

Answer:

0.305556 m / s

Explanation:

Speed = distance / time

2 metres = 0.002 km

6.5 sec = 0.00180556 hrs

Therefore,

Speed = 0.002 / 0.00180556

= 1.1 km / hr

= 0.305556 m / s

How many atoms are in 3.50 moles of calcium (Ca)?

Answers

$1\ mole\ --\ 6.02*10^(23)atoms\n 3.5\ moles--x\n x=21.07*10^(23)\ atoms$

No. of atoms = no.of moles x avagadro's constant

= 3.50 x 6.022*10^23

= 21.077 x 10 ^23

What is the name for Na20?

Answers

It is called disodium oxide :)

The name for Na2O is Disodium Oxide

Which of the following elements has the ability to undergo sublimation?a. oxygen
b. carbon
c. sodium
d. iodine

Answers

The best answer to this question would be (d.) iodine. Iodine is the elements who has the ability to undergo sublimation. Iodine is an important compound in terms of nutrition, production of acetic acid and polymers. Iodine is capable of transitioning from solid to gas without any specialized process.

The answer to your question is

d. idoine

Relationship between genes chromosomes an dna .

Answers

Answer:

Genes are segments of DNA that contain the code for a paticular protein that works in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Explanation:

Answer:

The answer should be A

Explanation:

Other Questions

When a liquid is cooled, the kinetic energy if the particles A. Decrease B. Increases C. Remains the same. The force of attraction between the particles A. Decrease B. Increases C. Remains the same , the space between the particles A. Decrease B. Increases C. Remains the same

How many moles are in 68.5 liters of oxygen gas at STP?

Which development was a direct result of thebaby boom that followed World War II?(1) decrease in school construction(2) increase in suburbanization(3) decline in crime rates(4) rise in immigration

A few pieces of dry ice, CO2(s), at -78°C are placed in a flask that contains air at 21°C. The flask is sealed by placing an uninflated balloon over the mouth of the flask. As the balloon inflates, the dry ice disappears and no liquid is observed in the flask.State the direction of heat flow that occurs between the dry ice and the air in the flask. Write the name of the process that occurs as the dry ice undergoes a phase change in the flask. [1]Compare the entropy of the CO2 molecules in the dry ice to the entropy of the CO2 molecules in the inflated balloon.