Miamigirl Miamigirl

01-02-2015
Chemistry

contestada

write the symbols for the following isotopes: Its atoms contain 50 electrons and 70 neutrons

Respuesta :

baseballbeast baseballbeast

01-02-2015

Since this element has 50 electrons you know that it has 50 protons. The number of proton= the atomic number. Atomic number 50 is tin. The atomic symbol for tin is Sn and the weight is 120. So this is the tin 120 isotope

Answer Link

Otras preguntas

Write 4-7 sentences that includes the title of the job you are interested in. Make sure your introduction provides context that is clear and well-developed.

"Note: The verbs are underlined. A. The rain poured down, but Jin was determined to win and ran as if everything depended on this race. B. The rain pours down,

The experiment step of the scientific method is testing the prediction. O True O False

Don't cross the road ! the bus ( come ).

A country produces two goods, gadgets and widgets. Last year the country produced 15,000 gadgets and 12,000 widgets. This year it produced 17,500 gadgets and 12

is there really life after death?

The amount y (in grams) of the radioactive isotope chromium-51 remaining after t days is y=a(0.5)^t/28, where a is the initial amount (in grams). What percent o

Ragini wants to lay tiles of size 20 cm x 20 cm on the floor of her kitchen which is 8 m in length and 4 m in breadth. How many tiles are required to complete

When magnesium is burnt in air, a powdery ash X is formed, X on dissolving in water forms y.i)what are X and Y?

4. Calcium oxide is used to make soil less acidic. What is its formula?