Why is C less reactive than a?
Down the group, the atomic size increases. Therefore, the attraction of the nucleus for the outside electrons decreases. This means that down the group of non-metals, reactivity decreases. Thus, the element C is less reactive than the element A.
Which element out of A and C is more reactive?
This means C has more number of shells than A. Since, C has more number of shells than A this means valence electrons of C is farther than A from the nucleus. And due to the more distance of valence electrons; element C has less electonnegativity than A. Thus, A is more reactive than C.
Which is more reactive A or B?
Answer. element A will be more reactive than element B as both lies in third period of periodic table and when we go from left to right in a period reactivity increases.
How do you know which element is the largest?
As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
What elements have the smallest radius?
Which element has the smallest atomic radius? Explanation: Helium has the smallest atomic radius.
Which of the following is correct order of metallic character for Si be?
Arrange the following elements in the increasing order of their metallic character: Si, Be, Mg, Na, P. Metallic character increases down a group and decreases along a period as we move from left to right. Hence the order of increasing metallic character is P < Si < Be < Mg < Na.
Which is more metallic magnesium or potassium?
Among K, Mg, and Ca, K (potassium) will be more metallic because it is an alkali metal. Calcium will be more metallic than magnesium because calcium comes in period 4 of group 4 and magnesium comes in period 3 of group 2.
Are magnesium and potassium metals?
Major metals in human cancer: calcium, magnesium, sodium and potassium.
Which is more metallic potassium or Aluminium?
According to reactivity series of metals, Potassium is more reactive than Aluminium. We can’t say which is metallic bcz Aluminium and potassium both are metals and metals have a metallic shine . Aakash EduTech Pvt. Ltd.