rifanadissy rifanadissy

16-03-2017
Chemistry

contestada

How many electrons are in the nucleus of an atom with an atomic number of 20?

Respuesta :

16-03-2017

atomic #20
is calcium
its 2 electron

Answer Link

Otras preguntas

100th term of 1, 4, 16

100 points if u help me im timed i need help right anwser only please help im timed

Refer to the figure at the right to answer each question. 5. Are points H, J, K, and L coplanar? 6. Name three lines that intersect at X. 7. What points do plan

what are 5 expressions that are equivalent to 12x4 exponent

She and Ann ALTERNATED helping the teacher after school. took turns b. took part c. took in d. took on

HEEEEELLLLLLPPPPPPP!!!!!!!!!!!!!! Find the area and perimeter. 20x2 − 12x; 10x − 5 12x2 − 20x; 7x − 5 7x2 − 5; 11x − 10 12x2 − 20x; 14x − 10

Y=3x-5 please help ASAP

= According to the map on the left, the highlighted portions indicate that which of the following were of high importance in the fight in the Pacific Ocean duri

Discussion Protocols Quick Check Why are goals important for a group discussion? (1 point) They keep the discussion on track. They limit group participation. Th

Which of the following shows the correct order of inventions that helped the first computers make calculations? 1st - Transistors, 2nd - Vacuum tubes, 3rd - Mec