Which two elements have the most similar chemical properties?(1) Be and Mg (3) Cl and Ar
(2) Ca and Br (4) Na and P

Answers

Answer 1

Answer:

Elements in the same groups shows similar chemical and physical properties. The elements having similar chemical properties are Be and Mg.

What are groups?

A group in periodic table is a column with elements of similar physical and chemical properties.

Both beryllium (Be) and magnesium are in group two with two valence electrons and both are metals. They have similar chemical and physical properties.

Cl is in 17th group and Ar is a 18th group element. They do not show any similarity in chemical properties. One is halogen which is unstable and the second one is noble gas which is stable. Thus no similarity.

Ca is a 2nd group element and Br is 17th group and they are different in chemical properties. One is metal and the second one is halogen with higher electronegativity.

Similarly, Na is in first group and P is 15th group element in periodic table in periodic table and does not show chemical similarities.

Therefore, the elements showing similar chemical properties are Be, Mg thus, option 1 is correct.

To learn more about groups in periodic table, refer the link below:

brainly.com/question/13219625

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Answer 2

Answer:

atoms are made of 3 types of sub atomic particles- protons, neutrons and electrons

from these 3 particles, electrons are responsible for participating in chemical bonds. therefore chemical properties of elements are based on the number of electrons present.

valence electrons are the number of electrons in the outermost energy shell that are involved in chemical bonds.

atoms with same number of valence electrons are grouped in to columns called groups.

therefore elements of the same group have same number of valence electrons, hence similar chemical properties.

from the options given

only Be and Mg belong to the same group they both belong to group 2 with 2 valence electrons

therefore Be and Mg have similar chemical properties

answer is

1) Be and Mg

Related Questions

Which statement describes a step in the formation of an ionic bond?An attraction occurs between two ions that have the same charge. A metal atom forms a cation, and a nonmetal atom forms an anion. A more electronegative atom transfers electrons to a less electronegative atom. A metal pulls electrons from another metal and produces a force of attraction.
Which statement describes the feeling interactions between frogs and insects? Select all that apply.A. The frog is a predator B. The interactions is mutualisticC. The frog is a parasiteD. The number of insects can influence the number of frogs in the ecosystem.
Which of the following molecules has polar bonds but is a nonpolar molecule?a. H₂ b. H₂O c. NH₃ d. NaCl e. CO₂ Can anyone explain this one?
Every substance is either an element or a ____. Fill in the blank. Molecular Compounds is the chapter I'm on.
for the following reaction, draw the major organic product and select the correct iupac name for the organic reactant. if there is more than one major product, both may be drawn in the same box. when drawing hydrogen atoms on a carbon atom, either include all hydrogen atoms or none on that carbon atom, or your structure may be marked incorrect.

Define electron affinity

Answers

Electron affinity corresponds to the energy released when an electron is added to a neutral atom in the gas phase.

hope this helps!

The point at which a substance is at complete equilibrium is called? User: a hydrogen bond is a special form of what type of bond

Answers

I don't know what the answer to your first question is. All of my teachers have only called it the equilibrium point. However for your second question, a hydrogen bond is a special type of dipole-dipole attraction. Only oxygen, nitrogen, and fluorine are able to make them when bonded with hydrogen. Hydrogen bonding is what makes water have such a high boiling point considering how light the molecule is.

Why do scientists use stirbars in the laboratory?a. to cool a solution
b. to heat a solution
c. to decrease the surface area of a solute
d. to agitate a solution

Answers

Answer : The correct option is, (d) to agitate a solution

Explanation :

Stir bars is a type tool which is used in the chemical laboratory for mixing the solute in the solvent.

Stir bars is a magnet which is covered with such type of material that does not react with any liquid it is immersed in. Its cover is not react for any type of liquids.

The stir bar magnet is placed in a container or flask. The stir bar magnet made to spin with an external magnetic field.

The stir bar magnet is used in the laboratory to agitate a solution.

Hence, the correct option is, (d) to agitate a solution

D. to agitate a solution

What is 16.00 kPa in atm?

Answers

There are 101.325 kPa in 1 atm. You are given 16 kPa and convert it to atm. All you need to do is divide 16 kPa to 101.325 kPa and you will get 0.16 atm

. SE7.12D Which of the following statements accurately represents the differences inplant and animal cells?
Only plant cells have a cell wall, chloroplasts, and a large vacuole.
Only animal cells have a cell wall, chloroplasts, and a large vacuole.
Only plant cells have a cell membrane, mitochondria, and cytoplasm.
Only animal cells have a cell membrane, mitochondria, and
cytoplasm.
CLEAR ALL

Answers

Features which are found in plant cellsonly are the chloroplast, large vacuole and cell wall.

Plants and animal cells consists of the following parts ; Mitochondria, cell membrane, vacuole, cytoplasm and so on.

The vacuole present in animal cells are much smaller than those found in plant Cells. Hence, vacuole in animal cells are called small vacuole

Plant cells also consists of cell wall, chloroplast and a large vacuole. All these are missing in animal cells.

Therefore, Only plant cells have "acellwall,chloroplastsandalargevacuole."

Learn more : brainly.com/question/18012076?referrer=searchResults

Only plant cells have a cell wall, chloroplasts, and a large vacuole.

I hope this helped :)

Round off the following measurement to three significant digits: 3255 mL. (a) 325 mL (b) 326 mL (c) 3250 mL (D) 3260 mL (e) none of the above

Answers

The answer is B. If you round it correctly you would get 326 ml and this number happens to have three significant digits.

Final answer:

To round off the measurement 3255 mL to three significant digits, the correct answer is (c) 3250 mL.

Explanation:

To round off a measurement to three significant digits, we look at the digit to the right of the third significant digit. If this digit is 5 or greater, we round up. If it is less than 5, we round down. In the given measurement of 3255 mL, the digit to the right of the third significant digit is 5, so we round up. Therefore, the correct answer is (c) 3250 mL.