Answer:
Phosphorous has the smallest atomic size.
Explanation:
As we know these elements belong to same period means there valence shell is the same. So moving from left to right along the period the shell number remains constant but the number of protons and electrons increases. So, due to increase in number of protons the nuclear charge increases hence attracts the valence electrons more effectively resulting in the decrease of atomic size.
Elements and their atomic radius are as follow,
<span><span>Magnesium 0.160 nm
</span><span>
Aluminium 0.130 nm
</span><span>
Silicon 0.118 nm
</span><span>
Phosphorus <span>0.110 nm</span></span></span>
Answer:
The pH does not decrease drastically because the NaOH reacts with the <u>D) Benzoic acid</u> present in the buffer solution.
Explanation:
The hydroxide ions will react with acidic part of the solutions, it means the benzoic acid, so it will form the conjugate base, the benzoate ion.
Explanation:
(a) Dry ice is solid carbon dioxide and its chemical formula is solid 
.
(b) Sodium chloride is commonly known as salt in daily life. Hence, chemical formula of salt is NaCl.
(c) Laughing gas is also known as dinitrogen monoxide. Hence, its chemical formula is 
.
(d) Marble (chalk limestone) is chemically known as calcium carbonate. Hence, its chemical formula is 
.
(e) Baking soda is chemically known as sodium bicarbonate. Hence, its chemical formula is 
.
(f) Ammonia has a chemical formula as 
.
(g) Water has a chemical formula as 
.
(h) Milk of magnesia is a base and it is chemically known as magnesium hydroxide. Its chemical formula is 
.
(i) Epsom salt is most often found as heptahydrate of sulfate mineral epsomite. Its chemical formula is usually 
. If not present as a heptahydrate then its chemical formula is 
where, value of x can be equal to 0 to 7.
