Answer:
Octet Rule is defined as the chemical rule in which atoms tend to form bonds in such a way that it completes its valence shell or tend to achieve the configuration of a noble gas.
Explanation:
The lithium is chemical element, which has atomic number 3. It has one valence electron in its outermost shell, therefore, it will require 7 more electrons to complete its octet.
The element nitrogen has the atomic number 7, such that it has 5 valence electrons in its outer most shell. Therefore, it will require 3 more electrons to complete its octet.
The noble gas Argon have complete octet, such that it does not require any electrons to complete its octet. the gas is inert and non-reactive.
The chemical element Boron has atomic number 5, such that it has three electrons in its outer most shell. Therefore, it will require 5 more electrons to complete its octet.
Hence, the correct option is Nitrogen.
Answer:
48889 years
Explanation:
Activity of the living sample Ao= 15.2 disintegration per minute
Activity of the cloth A= 8.4 disintegration per minute
Half life of 14C= 5715 years
Time taken for the decay t= the unknown
From;
0.693/5715 = 2.303/t log (15.2/8.4)
1.213 × 10^-4 = 2.303/t log (1.8095)
1.213 × 10^-4 = 0.593/t
t= 0.593/1.213 × 10^-4
t= 4888.7 years
t= 48889 years
Answer:
total weight to expect = 331.60 grams
Explanation:
The flask wanted to be charged with 1.6 grams of sugar. The empty flask was weighed on a balance and it was determined to weigh 330 grams . The weight we would expect when we add the sugar can be computed as follows:
weight of the empty flask = 330 grams
weight of the sugar = 1.6 grams
The weight of the flask after adding the sugar will be the sum of the weight of the sugar and the empty falsk
Therefore,
Total weight to expect = 330 grams + 1.6 grams
total weight to expect = 331.60 grams
1 gold(lll), 3 fluorine
This is because of the good has a 3+ charge and the fluorine has a 1- charge so they have to balance each other out
