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satela [25.4K]
2 years ago
9

What is meant by valency of an element ? give an example ​

Chemistry
1 answer:
lara31 [8.8K]2 years ago
5 0

Answer:

valency of an element is a combining power of an element.

for example oxygen has six valance electron but its valency is 2.

hope it helps.

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If a farmer wants to increase the health of his crops, he could apply a nitrogen-based fertilizer. why is nitrogen important to
Finger [1]
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8 0
3 years ago
The nucleus’ pull on its electrons, taking into account any attractions weakened by shielding is called the:
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Answer:

It's called the shielding effect

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8 0
2 years ago
Which of the following substances is classified as a solution?
Ainat [17]

Answer:

Salt water

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Please mark me brainliest and thank me.

3 0
3 years ago
Read 2 more answers
What is the mass of 2.5 mol of ca, which has a molar mass of g/mol
swat32
Atomic mass Ca = 40 a.m.u

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Mass Ca = 2.5 x 40 / 1

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hope this helps!
3 0
3 years ago
Fluorine (F) and bromine (Br) are in the same group on the periodic table. How do atoms of these elements compare when they form
mojhsa [17]

Answer is: Both a fluorine atom and a bromine atom gain one electron, and both atoms become stable.

Fluorine and bromine are in group 17 in Periodic table of elements. Group 17 (halogens) elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.

Halogens need to gain one electron to have electron cofiguration like next to it noble gas.

Fluorine has atomic number 9, it means it has 9 protons and 9 electrons.

Fluorine tends to have eight electrons in outer shell like neon (noble gas) and gains one electron in chemical reaction.

Electron configuration of fluorine: ₉F 1s² 2s² 2p⁵.

Electron configuration of neon: ₁₀Ne 1s² 2s² 2p⁶.



3 0
3 years ago
Read 2 more answers
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