Answer:
Explanation:
ρ =
m
V
=
30.8 gram
34.9 cubic meter
= 0.88252148997135 gram/cubic meter
= 0.00088252148997135 kilogram/cubic meter
Answer:
atomic mass= 33
Charge= -2
Explanation:
In an atom, are contained three SUBATOMIC particles viz: proton and neutron found in the nucleus, electrons surrounding the nucleus. Protons contain the positive charge of an atom while electrons contain the negative charge of an atom. The number of protons and electrons in an atom determines the charge of an ion (charged atom). Also, the atomic mass or mass number of that atom is got by adding the number of protons + number of neutrons.
In this case where the number of protons and number of neutrons are 16 and 17 respectively, the mass no. or atomic mass is 17 + 16 = 33.
Also, since two electrons are gained by this atom, it means the electron numbe, which is normally equal to the proton number in a neutral atom, will be increased by 2. Hence, the electron number will be 18 in this case.
The charge of the atom= no. of protons - no. of electrons = 16 - 18 = -2.
You should clean up after every investigation because if you leave a mess, maybe another detective will come in and get lost because of the mess you left.
Answer:
Period 7 element
Hydrogen
Lithium Beryllium Fluorine
Sodium Magnesium Chlorine
Potassium Calcium Bromine
Rubidium Strontium Iodine
Explanation:
An estuary is an area where a freshwater river or stream meets the ocean. So it’s true
