Answer:
Wavelength of electromagnetic wave = 4.0 × 10³
Explanation:
Given:
Wavelength of electromagnetic wave = 4000 meter
Find:
Write, Wavelength of electromagnetic wave into scientific notation
Computation:
Wavelength of electromagnetic wave = 4000 meter
Wavelength of electromagnetic wave = 4.0 × 1,000 meter
Wavelength of electromagnetic wave = 4.0 × 10³
So,
Option "B" is the correct answer to the following question.
Help????? You need to write as if you are Dmitri Mendeleev and you have just made your proposed version of the periodic table. You need to write to the Royal Society of Chemistry in London explaining:
• Who you are
• What your periodic table is like, the groups, elements and features
• Why you think your periodic table is correct
• How you have built on the work of others or why you think their work is not
correct
They all use thinking and imagination
Answer:
it is change because the two is the factor of its own force
Explanation: it increasead
<span>Sodium
matches with malleable, soft and shiny
These are tyipical properties of alkalyne metals. You can cut sodium with a knife as it is very soft.
Bromine matches with highly reactive gas
Bromine is an halogen and indeed is very reactive
Silicon matches with has
properties of both metals and nonmetals
Silicon is a metaloid so it has some properties of metals and some of nonmetals.
Argon matches with non reactive gas.
Argon is a noble gas, and as such it is not reactive.
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