Question

,
17. Read the following and answer any four questions from 176) to 17 (v).
Element
Atomic Number
Mass Number
6
12
B
7
C С
8
D
11
23
16
a 6
17(i) How many neutrons are present in element C?
b.7
c.8
011
17(ii) What is the electronic configuration of element D2
2.2.8,4
b.2.8.2
c.2.8.3
d. 2.8.1
17(i) Which of the following statement is correct?
a. The sum of number of electrons and protons is equal to the mass number.
b. The sum of number of protons and neutrons is equal to the mass number.
c. The sum of number of electrons and neutrons is equal to the atomic number.
d. The sum of number of electrons and protons is equal to the atomic number.
17(iv) Identify the element having atomic number 7
a. Carbon
b. Oxygen
c. Nitrogen
d. Fluorine
17(v) The valency of the element A is
a 2
b. 4
c. 3
d.1​

Answer 1

Answer:

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Explanation:

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