Assignment 10: Periodic Table
1.
a) K- potassium; 19; 39.098
b) P- phosphorus; 15; 30.974
c) N- nitrogen; 7; 14.007
2.Write the full name and symbol
a) Group 2, Period 3- magnesium; Mg
b) Group 14, Period 2- carbon; C
c) Group 18, Period 4- krypton; Kr
3. Halogen elements tend to have seven valence electrons, requiring only one addiction AP electron in order to form a full octet.
4.
a) Across a period from left to right- atomic radius decreases left to right
b) Down a group- atomic radius increases top to bottom within respected groups
5. Sulfur is larger than oxygen… Oxygen’s mass sits at 15.999, while Sulfur’s mass is at 32.066. Basically the mass of oxygen doubled.
Answer:
The correct answer is C. Xander has not yet attained object permanence.
Explanation:
According to Piaget's Stages of Cognitive Development, object permanence occurs during the <em>Sensorimotor Stage (birth- 2 years old)</em>, in which an infant understands that an <em>object is still there even if it cannot be seen. </em>
In this case, Xander has not yet obtained object permanence since as soon as the rattle is taken away, for him it has <em>ceased to exist</em>, thus making him be interested in other stimulus.
France and Great Britain were at war with each other in 1795 and America considered it an hostile nation and France retaliate by seizing American ships. A treaty was performed between the two known as Jay Treaty.
the compromise was failed when the American diplomats refuse to pay money in order to meet France foreign minister Tally-rand.
Answer:
Ethiopia is in the east, Cairo is NOT in Southern Africa, Egypt is in Northern Africa, and Cape Town is in South Africa. Also Nigeria is more so west, but can be northern depending on how your teacher wants it.
Explanation:
Check a map.
