Answer: Option (c) is the correct answer.
Explanation:
Atomic number of sodium is 11 and its electronic configuration is
. When sodium loses one electron then it will attain +1 charge and its electronic configuration will be as follows.
: 
Atomic number of fluorine is 9 and its electronic configuration is
. When fluorine gains an electron then it acquires -1 charge and its electronic configuration is as follows.
: 
Atomic number of aluminium is 13 and its electronic configuration is
. When aluminium loses its valence electrons then it acquires +3 charge and its electronic configuration is as follows.
: 
Thus, we can conclude that the listing for aluminum is correct.
In group theory, a branch of mathematics, the term order is used in two unrelated senses:
<span><span>The order of a group is its cardinality, i.e., the number of elements in its set. Also, the order, sometimes period, of an element a of a group is the smallest positive integer m such that <span>am = e</span> (where e denotes the identity element of the group, and am denotes the product of m copies of a). If no such m exists, a is said to have infinite order.</span><span>The ordering relation of a partially or totally ordered group.</span></span>
This article is about the first sense of order.
The order of a group G is denoted by ord(G) or | G | and the order of an element a is denoted by ord(a) or | a |.
Melting, due to the strong forces provided by lattice energy framework, would require more energy
Answer:
The answer would be D. when temperature increases, particles move faster.