Elements V,W and X have atomic number 17,19 and 20 respectively. (a) What is the valencies of V and W respectively. (b) To which groups of the...

Elements V,W and X have atomic number 17,19 and 20 respectively.
(a) What is the valencies of V and W respectively.
(b) To which groups of the periodic table do V, and X belong.
(c) In which periods do elements V and W lie.?
(d) Which of the three elements is a non-metal?
(e) Write down the formula of the compounds formed when:
(i) V reacts with W
(ii) X reacts with Oxygen
f) How many
(i) Neutrons does V have? if its mass number is 35
(ii) Protons does W have ?

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(a) V – 1 W – 1
(b) V – group 7 X – group 2
(c) V – period 3 X – period 4
(d) V
(e) (i) WV
(ii) XO
(f) (i) (35 – 17) = 18 neutrons
(ii) W – 19 protons

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sharon kalunda answered the question on May 21, 2019 at 08:28

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