1) An atom of nitrogen has 7 protons. How many protons does an atom of silicon have? 2) The element zinc (Zn) has an atomic number of 30. How many neurons does an atom of zinc contain?

Answer :

(1) The number of protons in silicon is, 14

(2) The number of neutrons in zinc is, 35

Explanation :

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

Prat 1 :

As we know that, silicon is a metalloid which belongs to group 14 and period 3.

The atomic number of silicon = 14

Atomic number = Number of protons = 14

Part 2 :

The given element is, zinc (Zn)

Atomic number of Zn = 30

Atomic number = Number of protons = 30

Mass number of Zn = 65

Number of neutrons = Mass number - Number of protons

Number of neutrons = 65 - 30

Number of neutrons = 35

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )