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3 years ago

Atoms of the element beryllium would most likely behave similar to the way _______ behaves.

2 answers:

3 0

It's b. calcium
because the outer electron structure in all of that element is similar, they have the same chemical and physical properties.

tatiyna3 years ago

3 0

Answer: The correct answer is Option B.

Explanation:

Beryllium is the 4th element of the periodic table having electronic configuration $1s^22s^2$ . This element belongs to Group 2 of the periodic table.

Elements that belong to same group show similar chemical properties because they have same number of valence electrons.

For the given options:

Option A: Hydrogen

This element belong to group 1 of the periodic table.

Option B: Calcium

This element belong to group 2 of the periodic table. Thus, this will show similar chemical properties to beryllium.

Option C: Lithium

This element belong to group 1 of the periodic table.

Option D: Boron

This element belong to group 13 of the periodic table.

Hence, the correct answer is Option B.

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12. Which atoms or group of atoms make up the functional group of ethanol (CH3CH2OH)?

Montano1993 [528]

Answer:

Option A. the hydroxyl group (-OH)

Explanation:

Ethanol, CH₃CH₂OH belongs to the class of organic compound called alkanol.

They have general formula as R–OH

Where

R => is an alkyl group

OH => is the hydroxyl group

The hydroxyl group (OH) is the functional group of the alkanol (alcohol)

8 0

3 years ago

What is Mg + O2 —> MgO

Agata [3.3K]

Answer:

this is a oxidation reaction

product is magnesium oxide

the balanced equation is

2Mg + O2 -> 2MgO

5 0

3 years ago

What are the 3 boundaries of discontinuity of the earths interior

enot [183]

Core , mantle, and crust

5 0

3 years ago

A scientist wants to determine which fertilizer is more effective—Fertilizer X or Fertilizer Y. The best way for her to proceed

Alecsey [184]

Answer:

The correct answer is "three groups of plants—a group fertilized by X, a group fertilized by Y, and a control group with no fertilizer".

Explanation:

I had to look for the problem to know the options.

The best way to determine which fertilizer is most effective is to have three evaluation groups. One group will be tested with fertilizer X and another with fertilizer Y. By leaving the third group without applying fertilizer, this will be the general pattern for comparing the effectiveness of the other two.

Have a nice day!

4 0

4 years ago

Which of these relationships is true of an uncharged atom?

marusya05 [52]

Answer:

The correct option is C) The number of protons is equal to the number of electrons.

Explanation:

Atoms are made up of particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom and form the nucleus, while electrons surround the nucleus. Electrons have a negative charge. The charge of the protons is positive and finally, the neutrons have no charge.

If the atom has no charge, this means that the total charge of the atomic nucleus, which is positive due to the presence of the protons, is equal to the negative charge of the electrons, so that it cancels out.

So, the correct option is C) The number of protons is equal to the number of electrons.

7 0

3 years ago