Question

Write the name and deduce the atomic number of the following element


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Answer 1

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$\large\purple{Question}$

Write the name and deduce the atomic number of the following element

i. The second alkali metal

ii. The fourth noble gas

iii. The third halogen

iv. The first transition element

$\large\purple{Answer}$

(i) Sodium (Z = 11)

(ii) krypton (Z = 36)

(iii) Bromine (Z = 35)

(iv) Scandium (Z = 21)

Answer 2

Answer:

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Alkali metals are the chemical elements found in Group 1 of the periodic table. The atomic number of third alkali metal K is 19.