Only, you have to find out the number of protons, o atomic number
Z=atomic number=number of protons=13
Now, you look for the element with Z=13, in a peridodic table.
The element with atomic number 13 is Aluminium.
A) Aluminium.
Answer:
the frequency of a wave is equal to the linear speed divided the wavelength. so in equation form.
f = v / l
where f is the frequency
v iss the linear speed
l is the wavelength
f = ( 345 m/s ) / ( 4.38 mm ) ( 1 m / 1000 mm )
f = 78767 per second
Explanation:
hope it helps
Energy level increases via periods ( rows )
thus B. antimony Sb is correct answer
Answer:
AM(amplitude modulation) and FM(frequency modulation)
Explanation:
A radio frequency band is a small adjacent section of the radio spectrum frequencies, whereby channels are usually used or set aside to be used.
They are usually of two different bands called AM which is known as amplitude modulation and FM which is known as frequency modulation