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k0ka [10]
3 years ago
9

What is the number of orbit for calcium

Chemistry
1 answer:
CaHeK987 [17]3 years ago
7 0
It has 20 electrons
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Add electron dots and charges as necessary to show the reaction of potassium and bromine to form an ionic compound
S_A_V [24]

Explanation: Electron dot structures are the lewis dot structures which represent the number of valence electrons around an atom in a molecule.

The electronic configuration of potassium is [Ar]4s^1

Valence electrons of potassium are 1.

The electronic configuration of Bromine is [Ar]4s^24p^5

Valence electrons of bromine are 7.

These two elements form ionic compound.

Ionic compound is defined as the compound which is formed from the complete transfer of electrons from one element to another element.

Here, one electron is released by potassium which is accepted by bromine element. In this process, Potassium becomes cation having +1 charge and Bromine become anion having (-1) charge.

The ionic equation follows:

K^++Br^-\rightarrow KBr

The electron dot structure is provided in the image below.

8 0
3 years ago
Read 2 more answers
How many moles are there in 1.505 X 1024 molecules of water, H2O?
KATRIN_1 [288]

Answer:

2.5 moles

Explanation:

Nᴀ=6.02×10²³ (constant)

n=N/Nᴀ=

=  \frac{1.505 \times 10 ^{24} }{ {6.02 \times 10}^{23} }  = 2.5 \: moles

5 0
3 years ago
How many moles of CoH12O6 are consumed<br> if 6 moles of O2 are consumed?
Rashid [163]

Answer:

2

Explanation:

There are 3 moles O2 in 1 mole CoH12O6 so 2 moles are consumed

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What is the total number of hydrogen atoms in a molecule of heptyne?
Step2247 [10]

Answer:

12

Explanation:

alkyne formula is CnH2n-2

heptyne = 7

6 0
3 years ago
The most common form of energy encountered in chemical reactions is _____. Select one:
Svetllana [295]
The answer is b heat
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